Alternatives to PromptLayer
Compare PromptLayer alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to PromptLayer in 2026. Compare features, ratings, user reviews, pricing, and more from PromptLayer competitors and alternatives in order to make an informed decision for your business.
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1
Google AI Studio
Google
Google AI Studio is a comprehensive, web-based development environment that democratizes access to Google's cutting-edge AI models, notably the Gemini family, enabling a broad spectrum of users to explore and build innovative applications. This platform facilitates rapid prototyping by providing an intuitive interface for prompt engineering, allowing developers to meticulously craft and refine their interactions with AI. Beyond basic experimentation, AI Studio supports the seamless integration of AI capabilities into diverse projects, from simple chatbots to complex data analysis tools. Users can rigorously test different prompts, observe model behaviors, and iteratively refine their AI-driven solutions within a collaborative and user-friendly environment. This empowers developers to push the boundaries of AI application development, fostering creativity and accelerating the realization of AI-powered solutions. -
2
Langtail
Langtail
Langtail is a cloud-based application development tool designed to help companies debug, test, deploy, and monitor LLM-powered apps with ease. The platform offers a no-code playground for debugging prompts, fine-tuning model parameters, and running LLM tests to prevent issues when models or prompts change. Langtail specializes in LLM testing, including chatbot testing and ensuring robust AI LLM test prompts. With its comprehensive features, Langtail enables teams to: • Test LLM models thoroughly to catch potential issues before they affect production environments. • Deploy prompts as API endpoints for seamless integration. • Monitor model performance in production to ensure consistent outcomes. • Use advanced AI firewall capabilities to safeguard and control AI interactions. Langtail is the ideal solution for teams looking to ensure the quality, stability, and security of their LLM and AI-powered applications.Starting Price: $99/month/unlimited users -
3
Maxim
Maxim
Maxim is an agent simulation, evaluation, and observability platform that empowers modern AI teams to deploy agents with quality, reliability, and speed. Maxim's end-to-end evaluation and data management stack covers every stage of the AI lifecycle, from prompt engineering to pre & post release testing and observability, data-set creation & management, and fine-tuning. Use Maxim to simulate and test your multi-turn workflows on a wide variety of scenarios and across different user personas before taking your application to production. Features: Agent Simulation Agent Evaluation Prompt Playground Logging/Tracing Workflows Custom Evaluators- AI, Programmatic and Statistical Dataset Curation Human-in-the-loop Use Case: Simulate and test AI agents Evals for agentic workflows: pre and post-release Tracing and debugging multi-agent workflows Real-time alerts on performance and quality Creating robust datasets for evals and fine-tuning Human-in-the-loop workflowsStarting Price: $29/seat/month -
4
Lunary
Lunary
Lunary is an AI developer platform designed to help AI teams manage, improve, and protect Large Language Model (LLM) chatbots. It offers features such as conversation and feedback tracking, analytics on costs and performance, debugging tools, and a prompt directory for versioning and team collaboration. Lunary supports integration with various LLMs and frameworks, including OpenAI and LangChain, and provides SDKs for Python and JavaScript. Guardrails to deflect malicious prompts and sensitive data leaks. Deploy in your VPC with Kubernetes or Docker. Allow your team to judge responses from your LLMs. Understand what languages your users are speaking. Experiment with prompts and LLM models. Search and filter anything in milliseconds. Receive notifications when agents are not performing as expected. Lunary's core platform is 100% open-source. Self-host or in the cloud, get started in minutes.Starting Price: $20 per month -
5
Literal AI
Literal AI
Literal AI is a collaborative platform designed to assist engineering and product teams in developing production-grade Large Language Model (LLM) applications. It offers a suite of tools for observability, evaluation, and analytics, enabling efficient tracking, optimization, and integration of prompt versions. Key features include multimodal logging, encompassing vision, audio, and video, prompt management with versioning and AB testing capabilities, and a prompt playground for testing multiple LLM providers and configurations. Literal AI integrates seamlessly with various LLM providers and AI frameworks, such as OpenAI, LangChain, and LlamaIndex, and provides SDKs in Python and TypeScript for easy instrumentation of code. The platform also supports the creation of experiments against datasets, facilitating continuous improvement and preventing regressions in LLM applications. -
6
LangChain
LangChain
LangChain is a powerful, composable framework designed for building, running, and managing applications powered by large language models (LLMs). It offers an array of tools for creating context-aware, reasoning applications, allowing businesses to leverage their own data and APIs to enhance functionality. LangChain’s suite includes LangGraph for orchestrating agent-driven workflows, and LangSmith for agent observability and performance management. Whether you're building prototypes or scaling full applications, LangChain offers the flexibility and tools needed to optimize the LLM lifecycle, with seamless integrations and fault-tolerant scalability. -
7
HoneyHive
HoneyHive
AI engineering doesn't have to be a black box. Get full visibility with tools for tracing, evaluation, prompt management, and more. HoneyHive is an AI observability and evaluation platform designed to assist teams in building reliable generative AI applications. It offers tools for evaluating, testing, and monitoring AI models, enabling engineers, product managers, and domain experts to collaborate effectively. Measure quality over large test suites to identify improvements and regressions with each iteration. Track usage, feedback, and quality at scale, facilitating the identification of issues and driving continuous improvements. HoneyHive supports integration with various model providers and frameworks, offering flexibility and scalability to meet diverse organizational needs. It is suitable for teams aiming to ensure the quality and performance of their AI agents, providing a unified platform for evaluation, monitoring, and prompt management. -
8
Comet LLM
Comet LLM
CometLLM is a tool to log and visualize your LLM prompts and chains. Use CometLLM to identify effective prompt strategies, streamline your troubleshooting, and ensure reproducible workflows. Log your prompts and responses, including prompt template, variables, timestamps and duration, and any metadata that you need. Visualize your prompts and responses in the UI. Log your chain execution down to the level of granularity that you need. Visualize your chain execution in the UI. Automatically tracks your prompts when using the OpenAI chat models. Track and analyze user feedback. Diff your prompts and chain execution in the UI. Comet LLM Projects have been designed to support you in performing smart analysis of your logged prompt engineering workflows. Each column header corresponds to a metadata attribute logged in the LLM project, so the exact list of the displayed default headers can vary across projects.Starting Price: Free -
9
Parea
Parea
The prompt engineering platform to experiment with different prompt versions, evaluate and compare prompts across a suite of tests, optimize prompts with one-click, share, and more. Optimize your AI development workflow. Key features to help you get and identify the best prompts for your production use cases. Side-by-side comparison of prompts across test cases with evaluation. CSV import test cases, and define custom evaluation metrics. Improve LLM results with automatic prompt and template optimization. View and manage all prompt versions and create OpenAI functions. Access all of your prompts programmatically, including observability and analytics. Determine the costs, latency, and efficacy of each prompt. Start enhancing your prompt engineering workflow with Parea today. Parea makes it easy for developers to improve the performance of their LLM apps through rigorous testing and version control. -
10
Pezzo
Pezzo
Pezzo is the open-source LLMOps platform built for developers and teams. In just two lines of code, you can seamlessly troubleshoot and monitor your AI operations, collaborate and manage your prompts in one place, and instantly deploy changes to any environment.Starting Price: $0 -
11
PromptBase
PromptBase
Prompts are becoming a powerful new way of programming AI models like DALL·E, Midjourney & GPT. However, it's hard to find good-quality prompts online. If you're good at prompt engineering, there's also no clear way to make a living from your skills. PromptBase is a marketplace for buying and selling quality prompts that produce the best results, and save you money on API costs. Find top prompts, produce better results, save on API costs, and sell your own prompts. PromptBase is an early marketplace for DALL·E, Midjourney, Stable Diffusion & GPT prompts. Sell your prompts on PromptBase and earn from your prompt crafting skills. Upload your prompt, connect with Stripe, and become a seller in just 2 minutes. Start prompt engineering instantly within PromptBase using Stable Diffusion. Craft prompts and sell them on the marketplace. Get 5 free generation credits every day.Starting Price: $2.99 one-time payment -
12
AIPRM
AIPRM
Click prompts in ChatGPT for SEO, marketing, copywriting, and more. The AIPRM extension adds a list of curated prompt templates for you to ChatGPT. Don't miss out on this productivity boost, use it now for free. Prompt Engineers publish their best prompts, for you. Experts that publish their prompts get rewarded with exposure and direct click-thrus to their websites. AIPRM is your AI prompt toolkit. Everything you need to prompt ChatGPT. AIPRM covers many different topics like SEO, sales, customer support, marketing strategy, or playing guitar. Don't waste any more time struggling to come up with the perfect prompts, let the AIPRM ChatGPT Prompts extension do the work for you! These prompts will help you optimize your website and boost its ranking on search engines, research new product strategies, and excel in sales and support for your SaaS. AIPRM is the AI prompt manager you have always wanted.Starting Price: Free -
13
LangFast
Langfa.st
LangFast is a lightweight prompt testing platform designed for product teams, prompt engineers, and developers working with LLMs. It offers instant access to a customizable prompt playground—no signup required. Users can build, test, and share prompt templates using Jinja2 syntax with real-time raw outputs directly from the LLM, without any API abstractions. LangFast eliminates the friction of manual testing by letting teams validate prompts, iterate faster, and collaborate more effectively. Built by a team with experience scaling AI SaaS to 15M+ users, LangFast gives you full control over the prompt development process—while keeping costs predictable through a simple pay-as-you-go model.Starting Price: $60 one time -
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Prompteams
Prompteams
Develop and version control your prompts. Auto-generated API to retrieve prompts. Automatically run end-to-end LLM testing before making updates to your prompts on production. Let your industry specialists and engineers collaborate on the same platform. Let your industry specialists and prompt engineers test and iterate on the same platform without any programming knowledge. With our testing suite, you can create and run unlimited test cases to ensure the quality of your your your your your prompt. Check for hallucinations, issues, edge cases, and more. Our suite is the most complex of prompts. Use Git-like features to manage your prompts. Create a repository for each project, and create multiple branches to iterate on your prompts. Commit your changes and test them in a separate environment. Easily revert back to a previous version. With our real-time APIs, one single click, and your prompt is updated and live.Starting Price: Free -
15
PromptPerfect
PromptPerfect
Welcome to PromptPerfect, a cutting-edge prompt optimizer designed for large language models (LLMs), large models (LMs) and LMOps. Finding the perfect prompt can be tough - it's the key for great AI-generated content. But don't worry, PromptPerfect has got you covered! Our cutting-edge tool streamlines prompt engineering, automatically optimizing your prompts for ChatGPT, GPT-3.5, DALLE, and StableDiffusion models. Whether you're a prompt engineer, content creator, or AI developer, PromptPerfect makes prompt optimization easy and accessible. With its intuitive interface and powerful features, PromptPerfect unlocks the full potential of LLMs and LMs, delivering top-quality results every time. Say goodbye to subpar AI-generated content and hello to prompt perfection with PromptPerfect!Starting Price: $9.99 per month -
16
Chainlit
Chainlit
Chainlit is an open-source Python package designed to expedite the development of production-ready conversational AI applications. With Chainlit, developers can build and deploy chat-based interfaces in minutes, not weeks. The platform offers seamless integration with popular AI tools and frameworks, including OpenAI, LangChain, and LlamaIndex, allowing for versatile application development. Key features of Chainlit include multimodal capabilities, enabling the processing of images, PDFs, and other media types to enhance productivity. It also provides robust authentication options, supporting integration with providers like Okta, Azure AD, and Google. The Prompt Playground feature allows developers to iterate on prompts in context, adjusting templates, variables, and LLM settings for optimal results. For observability, Chainlit offers real-time visualization of prompts, completions, and usage metrics, ensuring efficient and trustworthy LLM operations. -
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PromptPal
PromptPal
Unleash your creativity with PromptPal, the ultimate platform for discovering and sharing the best AI prompts. Generate new ideas, and boost productivity. Unlock the power of artificial intelligence with PromptPal's over 3,400 free AI prompts. Explore our great catalog of directions and be inspired and more productive today. Browse our large catalog of ChatGPT prompts and get inspired and more productive today. Earn revenue by posting prompts and sharing your prompt engineering skills with the PromptPal community.Starting Price: $3.74 per month -
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PromptHub
PromptHub
Test, collaborate, version, and deploy prompts, from a single place, with PromptHub. Put an end to continuous copy and pasting and utilize variables to simplify prompt creation. Say goodbye to spreadsheets, and easily compare outputs side-by-side when tweaking prompts. Bring your datasets and test prompts at scale with batch testing. Make sure your prompts are consistent by testing with different models, variables, and parameters. Stream two conversations and test different models, system messages, or chat templates. Commit prompts, create branches, and collaborate seamlessly. We detect prompt changes, so you can focus on outputs. Review changes as a team, approve new versions, and keep everyone on the same page. Easily monitor requests, costs, and latencies. PromptHub makes it easy to test, version, and collaborate on prompts with your team. Our GitHub-style versioning and collaboration makes it easy to iterate your prompts with your team, and store them in one place. -
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Narrow AI
Narrow AI
Introducing Narrow AI: Take the Engineer out of Prompt Engineering Narrow AI autonomously writes, monitors, and optimizes prompts for any model - so you can ship AI features 10x faster at a fraction of the cost. Maximize quality while minimizing costs - Reduce AI spend by 95% with cheaper models - Improve accuracy through Automated Prompt Optimization - Achieve faster responses with lower latency models Test new models in minutes, not weeks - Easily compare prompt performance across LLMs - Get cost and latency benchmarks for each model - Deploy on the optimal model for your use case Ship LLM features 10x faster - Automatically generate expert-level prompts - Adapt prompts to new models as they are released - Optimize prompts for quality, cost and speedStarting Price: $500/month/team -
20
PromptPoint
PromptPoint
Turbocharge your team’s prompt engineering by ensuring high-quality LLM outputs with automatic testing and output evaluation. Make designing and organizing your prompts seamless, with the ability to template, save, and organize your prompt configurations. Run automated tests and get comprehensive results in seconds, helping you save time and elevate your efficiency. Structure your prompt configurations with precision, then instantly deploy them for use in your very own software applications. Design, test, and deploy prompts at the speed of thought. Unlock the power of your whole team, helping you bridge the gap between technical execution and real-world relevance. PromptPoint's natively no-code platform allows anyone and everyone in your team to write and test prompt configurations. Maintain flexibility in a many-model world by seamlessly connecting with hundreds of large language models.Starting Price: $20 per user per month -
21
PromptGround
PromptGround
Simplify prompt edits, version control, and SDK integration in one place. No more scattered tools or waiting on deployments for changes. Explore features crafted to streamline your workflow and elevate prompt engineering. Manage your prompts and projects in a structured way, with tools designed to keep everything organized and accessible. Dynamically adapt your prompts to fit the context of your application, enhancing user experience with tailored interactions. Seamlessly incorporate prompt management into your current development environment with our user-friendly SDK, designed for minimal disruption and maximum efficiency. Leverage detailed analytics to understand prompt performance, user engagement, and areas for improvement, informed by concrete data. Invite team members to collaborate in a shared environment, where everyone can contribute, review, and refine prompts together. Control access and permissions within your team, ensuring members can work effectively.Starting Price: $4.99 per month -
22
Klu
Klu
Klu.ai is a Generative AI platform that simplifies the process of designing, deploying, and optimizing AI applications. Klu integrates with your preferred Large Language Models, incorporating data from varied sources, giving your applications unique context. Klu accelerates building applications using language models like Anthropic Claude, Azure OpenAI, GPT-4, and over 15 other models, allowing rapid prompt/model experimentation, data gathering and user feedback, and model fine-tuning while cost-effectively optimizing performance. Ship prompt generations, chat experiences, workflows, and autonomous workers in minutes. Klu provides SDKs and an API-first approach for all capabilities to enable developer productivity. Klu automatically provides abstractions for common LLM/GenAI use cases, including: LLM connectors, vector storage and retrieval, prompt templates, observability, and evaluation/testing tooling.Starting Price: $97 -
23
Vellum AI
Vellum
Bring LLM-powered features to production with tools for prompt engineering, semantic search, version control, quantitative testing, and performance monitoring. Compatible across all major LLM providers. Quickly develop an MVP by experimenting with different prompts, parameters, and even LLM providers to quickly arrive at the best configuration for your use case. Vellum acts as a low-latency, highly reliable proxy to LLM providers, allowing you to make version-controlled changes to your prompts – no code changes needed. Vellum collects model inputs, outputs, and user feedback. This data is used to build up valuable testing datasets that can be used to validate future changes before they go live. Dynamically include company-specific context in your prompts without managing your own semantic search infra. -
24
Entry Point AI
Entry Point AI
Entry Point AI is the modern AI optimization platform for proprietary and open source language models. Manage prompts, fine-tunes, and evals all in one place. When you reach the limits of prompt engineering, it’s time to fine-tune a model, and we make it easy. Fine-tuning is showing a model how to behave, not telling. It works together with prompt engineering and retrieval-augmented generation (RAG) to leverage the full potential of AI models. Fine-tuning can help you to get better quality from your prompts. Think of it like an upgrade to few-shot learning that bakes the examples into the model itself. For simpler tasks, you can train a lighter model to perform at or above the level of a higher-quality model, greatly reducing latency and cost. Train your model not to respond in certain ways to users, for safety, to protect your brand, and to get the formatting right. Cover edge cases and steer model behavior by adding examples to your dataset.Starting Price: $49 per month -
25
DoCoreAI
MobiLights
DoCoreAI is an AI prompt optimization and telemetry platform designed for AI-first product teams, SaaS companies, and developers working with large language models (LLMs) like OpenAI & Groq (Infra). With a local-first Python client and secure telemetry engine, DoCoreAI enables teams to collect LLM usage metrics without exposing original prompts & ensuring data privacy. Key Capabilities: - Prompt Optimization → Improve efficiency and reliability of LLM prompts. - LLM Usage Monitoring → Track tokens, response times, and performance trends. - Cost Analytics → Monitor and optimize LLM costs across teams. - Developer Productivity Dashboards → Identify time savings and usage bottlenecks. - AI Telemetry → Collect detailed insights while maintaining user privacy. DoCoreAI helps businesses save on token costs, improve AI model performance, and give developers a single place to understand how prompts behave in production.Starting Price: $9/month -
26
Langfuse
Langfuse
Langfuse is an open source LLM engineering platform to help teams collaboratively debug, analyze and iterate on their LLM Applications. Observability: Instrument your app and start ingesting traces to Langfuse Langfuse UI: Inspect and debug complex logs and user sessions Prompts: Manage, version and deploy prompts from within Langfuse Analytics: Track metrics (LLM cost, latency, quality) and gain insights from dashboards & data exports Evals: Collect and calculate scores for your LLM completions Experiments: Track and test app behavior before deploying a new version Why Langfuse? - Open source - Model and framework agnostic - Built for production - Incrementally adoptable - start with a single LLM call or integration, then expand to full tracing of complex chains/agents - Use GET API to build downstream use cases and export dataStarting Price: $29/month -
27
DeepEval
Confident AI
DeepEval is a simple-to-use, open source LLM evaluation framework, for evaluating and testing large-language model systems. It is similar to Pytest but specialized for unit testing LLM outputs. DeepEval incorporates the latest research to evaluate LLM outputs based on metrics such as G-Eval, hallucination, answer relevancy, RAGAS, etc., which uses LLMs and various other NLP models that run locally on your machine for evaluation. Whether your application is implemented via RAG or fine-tuning, LangChain, or LlamaIndex, DeepEval has you covered. With it, you can easily determine the optimal hyperparameters to improve your RAG pipeline, prevent prompt drifting, or even transition from OpenAI to hosting your own Llama2 with confidence. The framework supports synthetic dataset generation with advanced evolution techniques and integrates seamlessly with popular frameworks, allowing for efficient benchmarking and optimization of LLM systems.Starting Price: Free -
28
LangMem
LangChain
LangMem is a lightweight, flexible Python SDK from LangChain that equips AI agents with long-term memory capabilities, enabling them to extract, store, update, and retrieve meaningful information from past interactions to become smarter and more personalized over time. It supports three memory types and offers both hot-path tools for real-time memory management and background consolidation for efficient updates beyond active sessions. Through a storage-agnostic core API, LangMem integrates seamlessly with any backend and offers native compatibility with LangGraph’s long-term memory store, while also allowing type-safe memory consolidation using schemas defined in Pydantic. Developers can incorporate memory tools into agents using simple primitives to enable seamless memory creation, retrieval, and prompt optimization within conversational flows. -
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Promptologer
Promptologer
Promptologer is supporting the next generation of prompt engineers, entrepreneurs, business owners, and everything in between. Display your collection of prompts and GPTs, publish and share content with ease with our blog integration, and benefit from shared SEO traffic with the Promptologer ecosystem. Your all-in-one toolkit for product management, powered by AI. From generating product requirements to crafting insightful user personas and business model canvases, UserTale makes planning and executing your product strategy effortless while minimizing ambiguity. Transform text into multiple choice, true/false, or fill-in-the-blank quizzes automatically with Yippity’s AI-powered question generator. Variability in prompts can lead to diverse outputs. We provide a platform for you to deploy AI web apps exclusive to your team. This allows team members to collaboratively create, share, and utilize company-approved prompts, ensuring uniformity and excellence in results. -
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Latitude
Latitude
Latitude is an open-source prompt engineering platform designed to help product teams build, evaluate, and deploy AI models efficiently. It allows users to import and manage prompts at scale, refine them with real or synthetic data, and track the performance of AI models using LLM-as-judge or human-in-the-loop evaluations. With powerful tools for dataset management and automatic logging, Latitude simplifies the process of fine-tuning models and improving AI performance, making it an essential platform for businesses focused on deploying high-quality AI applications.Starting Price: $0 -
31
Langdock
Langdock
Native support for ChatGPT and LangChain. Bing, HuggingFace and more coming soon. Add your API documentation manually or import an existing OpenAPI specification. Access the request prompt, parameters, headers, body and more. Inspect detailed live metrics about how your plugin is performing, including latencies, errors, and more. Configure your own dashboards, track funnels and aggregated metrics.Starting Price: Free -
32
HumanLayer
HumanLayer
HumanLayer is an API and SDK that enables AI agents to contact humans for feedback, input, and approvals. It guarantees human oversight of high-stakes function calls with approval workflows across Slack, email, and more. By integrating with your preferred Large Language Model (LLM) and framework, HumanLayer empowers AI agents with safe access to the world. The platform supports various frameworks and LLMs, including LangChain, CrewAI, ControlFlow, LlamaIndex, Haystack, OpenAI, Claude, Llama3.1, Mistral, Gemini, and Cohere. HumanLayer offers features such as approval workflows, human-as-tool integration, and custom responses with escalations. Pre-fill response prompts for seamless human-agent interactions. Route to specific individuals or teams, and control which users can approve or respond to LLM requests. Invert the flow of control, from human-initiated to agent-initiated. Add a variety of human contact channels to your agent toolchain.Starting Price: $500 per month -
33
Agenta
Agenta
Agenta is an open-source LLMOps platform designed to help teams build reliable AI applications with integrated prompt management, evaluation workflows, and system observability. It centralizes all prompts, experiments, traces, and evaluations into one structured hub, eliminating scattered workflows across Slack, spreadsheets, and emails. With Agenta, teams can iterate on prompts collaboratively, compare models side-by-side, and maintain full version history for every change. Its evaluation tools replace guesswork with automated testing, LLM-as-a-judge, human annotation, and intermediate-step analysis. Observability features allow developers to trace failures, annotate logs, convert traces into tests, and monitor performance regressions in real time. Agenta helps AI teams transition from siloed experimentation to a unified, efficient LLMOps workflow for shipping more reliable agents and AI products.Starting Price: Free -
34
Humanloop
Humanloop
Eye-balling a few examples isn't enough. Collect end-user feedback at scale to unlock actionable insights on how to improve your models. Easily A/B test models and prompts with the improvement engine built for GPT. Prompts only get your so far. Get higher quality results by fine-tuning on your best data – no coding or data science required. Integration in a single line of code. Experiment with Claude, ChatGPT and other language model providers without touching it again. You can build defensible and innovative products on top of powerful APIs – if you have the right tools to customize the models for your customers. Copy AI fine tune models on their best data, enabling cost savings and a competitive advantage. Enabling magical product experiences that delight over 2 million active users. -
35
Weavel
Weavel
Meet Ape, the first AI prompt engineer. Equipped with tracing, dataset curation, batch testing, and evals. Ape achieves an impressive 93% on the GSM8K benchmark, surpassing both DSPy (86%) and base LLMs (70%). Continuously optimize prompts using real-world data. Prevent performance regression with CI/CD integration. Human-in-the-loop with scoring and feedback. Ape works with the Weavel SDK to automatically log and add LLM generations to your dataset as you use your application. This enables seamless integration and continuous improvement specific to your use case. Ape auto-generates evaluation code and uses LLMs as impartial judges for complex tasks, streamlining your assessment process and ensuring accurate, nuanced performance metrics. Ape is reliable, as it works with your guidance and feedback. Feed in scores and tips to help Ape improve. Equipped with logging, testing, and evaluation for LLM applications.Starting Price: Free -
36
LangGraph
LangChain
Gain precision and control with LangGraph to build agents that reliably handle complex tasks. Build and scale agentic applications with LangGraph Platform. LangGraph's flexible framework supports diverse control flows – single agent, multi-agent, hierarchical, sequential – and robustly handles realistic, complex scenarios. Ensure reliability with easy-to-add moderation and quality loops that prevent agents from veering off course. Use LangGraph Platform to templatize your cognitive architecture so that tools, prompts, and models are easily configurable with LangGraph Platform Assistants. With built-in statefulness, LangGraph agents seamlessly collaborate with humans by writing drafts for review and awaiting approval before acting. Easily inspect the agent’s actions and "time-travel" to roll back and take a different action to correct course.Starting Price: Free -
37
ChainForge
ChainForge
ChainForge is an open-source visual programming environment designed for prompt engineering and large language model evaluation. It enables users to assess the robustness of prompts and text-generation models beyond anecdotal evidence. Simultaneously test prompt ideas and variations across multiple LLMs to identify the most effective combinations. Evaluate response quality across different prompts, models, and settings to select the optimal configuration for specific use cases. Set up evaluation metrics and visualize results across prompts, parameters, models, and settings, facilitating data-driven decision-making. Manage multiple conversations simultaneously, template follow-up messages, and inspect outputs at each turn to refine interactions. ChainForge supports various model providers, including OpenAI, HuggingFace, Anthropic, Google PaLM2, Azure OpenAI endpoints, and locally hosted models like Alpaca and Llama. Users can adjust model settings and utilize visualization nodes. -
38
PromptIDE
xAI
The xAI PromptIDE is an integrated development environment for prompt engineering and interpretability research. It accelerates prompt engineering through an SDK that allows implementing complex prompting techniques and rich analytics that visualize the network's outputs. We use it heavily in our continuous development of Grok. We developed the PromptIDE to give transparent access to Grok-1, the model that powers Grok, to engineers and researchers in the community. The IDE is designed to empower users and help them explore the capabilities of our large language models (LLMs) at pace. At the heart of the IDE is a Python code editor that - combined with a new SDK - allows implementing complex prompting techniques. While executing prompts in the IDE, users see helpful analytics such as the precise tokenization, sampling probabilities, alternative tokens, and aggregated attention masks. The IDE also offers quality of life features. It automatically saves all prompts.Starting Price: Free -
39
EchoStash
EchoStash
EchoStash is a personal AI-driven prompt management platform that lets you save, organize, search, and reuse your best AI prompts across multiple models with an intelligent search engine. It comes with official prompt libraries curated from leading AI providers (Anthropic, OpenAI, Cursor, and more), starter playbooks for users new to prompt engineering, and AI-powered search that understands your intent to surface the most relevant prompts without requiring exact keyword matches. The streamlined onboarding and user interface ensure a frictionless experience, while tagging and categorization features help you maintain structured libraries. A community prompt library is also in development to share and discover tested prompts. Designed to eliminate the need to reconstruct successful prompts and to deliver consistent, high-quality outputs, EchoStash accelerates workflows for anyone working heavily with generative AI.Starting Price: $14.99 per month -
40
Portkey
Portkey.ai
Launch production-ready apps with the LMOps stack for monitoring, model management, and more. Replace your OpenAI or other provider APIs with the Portkey endpoint. Manage prompts, engines, parameters, and versions in Portkey. Switch, test, and upgrade models with confidence! View your app performance & user level aggregate metics to optimise usage and API costs Keep your user data secure from attacks and inadvertent exposure. Get proactive alerts when things go bad. A/B test your models in the real world and deploy the best performers. We built apps on top of LLM APIs for the past 2 and a half years and realised that while building a PoC took a weekend, taking it to production & managing it was a pain! We're building Portkey to help you succeed in deploying large language models APIs in your applications. Regardless of you trying Portkey, we're always happy to help!Starting Price: $49 per month -
41
Promptimize
Promptimize
Promptimize AI is a browser extension that empowers users to enhance their AI interactions seamlessly. By simply writing a prompt and clicking "enhance," users can transform their initial inputs into more effective prompts, thereby improving AI-generated content quality. The extension offers features such as instant enhancement, dynamic variables for consistent context, a prompt library for saving favorites, and compatibility with all major AI platforms, including ChatGPT, Claude, and Gemini. This tool is ideal for anyone looking to streamline their prompt creation process, maintain brand consistency, and refine their prompt engineering skills without the need for extensive expertise. People shouldn’t have to become prompt engineers to use AI, let Promptimize do the heavy lifting. Tailored prompts generate more precise, engaging, and impactful AI outputs. Streamline your prompt creation process, saving valuable time and resources.Starting Price: $12 per month -
42
PI Prompts
PI Prompts
An intuitive right-hand side panel for ChatGPT, Google Gemini, Claude.ai, Mistral, Groq, and Pi.ai. Reach your prompt library with a click. The PI Prompts Chrome extension is a powerful tool designed to enhance your experience with AI models. The extension simplifies your workflow by eliminating the need for constant copy-pasting of prompts. It comes with convenient options to download and upload prompts in JSON format, so you can share your collection with your friends or even create task-specific collections. As you start writing your prompt in the input box (as normally), this extension quickly filters your right panel by showing the connected prompts. You can download and upload your prompt list anytime, even adding external prompt lists in JSON format. You can edit and delete prompts directly on the panel. Your prompts will be synced between your devices, where you use Chrome. The panel is usable with both light and dark themes.Starting Price: Free -
43
Orq.ai
Orq.ai
Orq.ai is the #1 platform for software teams to operate agentic AI systems at scale. Optimize prompts, deploy use cases, and monitor performance, no blind spots, no vibe checks. Experiment with prompts and LLM configurations before moving to production. Evaluate agentic AI systems in offline environments. Roll out GenAI features to specific user groups with guardrails, data privacy safeguards, and advanced RAG pipelines. Visualize all events triggered by agents for fast debugging. Get granular control on cost, latency, and performance. Connect to your favorite AI models, or bring your own. Speed up your workflow with out-of-the-box components built for agentic AI systems. Manage core stages of the LLM app lifecycle in one central platform. Self-hosted or hybrid deployment with SOC 2 and GDPR compliance for enterprise security. -
44
SpellPrints
SpellPrints
SpellPrints is a platform for creators to build and monetize generative AI-powered applications. Platform provides access to over 1,000 AI models, UI elements, payments, and a prompt chaining interface, making it easy for prompt engineers to transform their know-how into a business. Without writing any code, the creator can turn prompts or AI models into monetizable applications that can be distributed via UI, API, and SpellPrints marketplace. We're creating both a platform to develop these apps and a marketplace for users to find and use them. -
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Quartzite AI
Quartzite AI
Work on prompts with your team, share templates and data and manage all API costs on a single platform. Write complex prompts with ease, iterate, and compare the quality of outputs. Easily compose complex prompts in Quartzite's superior Markdown editor, save a draft, and submit it once ready. Improve your prompts by testing different variations and model settings. Save by switching to pay-per-usage GPT pricing and keep track of your spending in-app. Stop rewriting the same prompts over and over. Create your own template library, or use our default one. We're continually integrating the best models, allowing you to toggle them on or off based on your needs. Seamlessly fill templates with variables or import CSV data to generate multiple versions. Download your prompts and completions in various file formats for further use. Quartzite AI communicates directly with OpenAI, and your data is stored locally in your browser, ensuring your privacy.Starting Price: $14.98 one-time payment -
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Prompt Builder
Prompt Builder
Prompt Builder is a professional AI prompt engineering platform designed to transform simple ideas into polished, high-performing prompts for models like ChatGPT, Claude, and Google Gemini, in mere seconds. It features three core capabilities; Generate, which turns plain language descriptions into optimized prompts using over 1,000 proven templates; Optimize, refining existing prompts with advanced prompt-engineering techniques; and Organize, which helps users catalog their best prompts using tags, bookmarks, and folders. The tool also supports content tailored for social media platforms, such as Twitter, LinkedIn, Instagram, and TikTok, and enables crafting detailed image prompts for tools like DALL·E, Midjourney, and Stable Diffusion. Rated highly by professional users, Prompt Builder provides a centralized hub to generate, refine, and manage prompts across multiple AI models with consistency and ease.Starting Price: $9 per month -
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Prompt Mixer
Prompt Mixer
Use Prompt Mixer to create prompts and chains. Combinе your chains with datasets and improve with AI. Develop a comprehensive set of test scenarios to assess various prompt and model pairings, determining the optimal combination for diverse use cases. Incorporate Prompt Mixer into your everyday tasks, from creating content to conducting R&D. Prompt Mixer can streamline your workflow and boost productivity. Use Prompt Mixer to efficiently create, assess, and deploy content generation models for various applications such as blog posts and emails. Use Prompt Mixer to extract or merge data in a completely secure manner and easily monitor it after deployment.Starting Price: $29 per month -
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16x Prompt
16x Prompt
Manage source code context and generate optimized prompts. Ship with ChatGPT and Claude. 16x Prompt helps developers manage source code context and prompts to complete complex coding tasks on existing codebases. Enter your own API key to use APIs from OpenAI, Anthropic, Azure OpenAI, OpenRouter, or 3rd party services that offer OpenAI API compatibility, such as Ollama and OxyAPI. Using API avoids leaking your code to OpenAI or Anthropic training data. Compare the code output of different LLM models (for example, GPT-4o & Claude 3.5 Sonnet) side-by-side to see which one is the best for your use case. Craft and save your best prompts as task instructions or custom instructions to use across different tech stacks like Next.js, Python, and SQL. Fine-tune your prompt with various optimization settings to get the best results. Organize your source code context using workspaces to manage multiple repositories and projects in one place and switch between them easily.Starting Price: $24 one-time payment -
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Flowise
Flowise AI
Flowise is an open-source, low-code platform that enables developers to create customized Large Language Model (LLM) applications through a user-friendly drag-and-drop interface. It supports integration with various LLMs, including LangChain and LlamaIndex, and offers over 100 integrations to facilitate the development of AI agents and orchestration flows. Flowise provides APIs, SDKs, and embedded widgets for seamless incorporation into existing systems, and is platform-agnostic, allowing deployment in air-gapped environments with local LLMs and vector databases.Starting Price: Free -
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DemoGPT
Melih Ünsal
DemoGPT is an open source platform that simplifies the creation of LLM (Large Language Model) agents by providing an all-in-one toolkit. It offers tools, frameworks, prompts, and models for rapid agent development. The platform automatically generates LangChain code, which can be used for creating interactive applications with Streamlit. DemoGPT translates user instructions into functional applications through a multi-step process: planning, task creation, and code generation. It supports a streamlined approach to building AI-powered agents, offering an accessible environment for developing sophisticated, production-ready solutions with GPT-3.5-turbo. Additionally, it integrates API usage and external API interaction in future updates.Starting Price: Free
