Opik vs. Respan Comparison


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About Confidently evaluate, test, and ship LLM applications with a suite of observability tools to calibrate language model outputs across your dev and production lifecycle. Log traces and spans, define and compute evaluation metrics, score LLM outputs, compare performance across app versions, and more. Record, sort, search, and understand each step your LLM app takes to generate a response. Manually annotate, view, and compare LLM responses in a user-friendly table. Log traces during development and in production. Run experiments with different prompts and evaluate against a test set. Choose and run pre-configured evaluation metrics or define your own with our convenient SDK library. Consult built-in LLM judges for complex issues like hallucination detection, factuality, and moderation. Establish reliable performance baselines with Opik's LLM unit tests, built on PyTest. Build comprehensive test suites to evaluate your entire LLM pipeline on every deployment.	About Respan is a self-driving observability and evaluation platform built specifically for AI agents. It enables teams to trace full execution flows, including messages, tool calls, routing decisions, memory usage, and outcomes. The platform connects observability, evaluations, and optimization into a continuous improvement loop. Metric-first evaluations allow teams to define performance standards such as accuracy, cost, reliability, and safety. Respan also includes capability and regression testing to protect stable behaviors while improving new ones. An AI-powered evaluation agent analyzes failures, identifies root causes, and recommends next steps automatically. With compliance certifications including ISO 27001, SOC 2, GDPR, and HIPAA, Respan supports secure, large-scale AI deployments across industries.
Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Developers looking for a solution to evaluate, test, and monitor their LLM applications	Audience Respan is ideal for AI engineering teams, product teams, and enterprises deploying large-scale AI agents who need advanced observability, evaluation, and compliance-ready monitoring infrastructure
Support Phone Support Supported 24/7 Live Support Supported Online Supported	Support Phone Support Supported 24/7 Live Support Supported Online Supported
API Offers API Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $39 per month Free Version Supported Free Trial Supported	Pricing $0/month Free Version Not Supported Free Trial Not Supported
Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 4.0 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Pros & Cons from Real Users Pros My team has switched to Opik from Arize about 4 months ago. We have evaluated Arize, Langfuse, Opik and Langsmith. Overall Opik was the best platform. Phoenix OSS doesn't have half the features, Langsmith is nice but super expensive and not OSS and Langfuse is brittle and has tons of performance issues. We found one bug on Opik, opened a PR on the GH repo and it was fixed and merged in less than 5 hours. Cons Personally I think they can make the UI a bit prettier.
Training Documentation Supported Webinars Supported Live Online Supported In Person Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Comet Founded: 2017 United States www.comet.com/site/products/opik/	Company Information Respan Founded: 2023 United States www.respan.ai/
Alternatives Maxim	Alternatives Maxim
DeepEval Confident AI	Braintrust Braintrust Data
Respan	Athina AI
Selene 1 atla	Orq.ai
Scorable View All	Openlayer View All
Categories LLM Evaluation Supported	Categories AI Agent Observability Supported AI Development Supported AI Observability Supported AI Tools Supported DevOps Supported LLM Evaluation Supported

Integrations Claude Supported DeepEval Supported GPT-3.5 Not Supported GPT-4 Not Supported Gemini 1.5 Pro Not Supported Gemini 2.0 Not Supported Gemini 2.0 Flash Not Supported Gemini Nano Not Supported Google AI Plus Not Supported Hugging Face Supported Kong AI Gateway Supported LlamaIndex Supported Mathstral Not Supported Ministral 8B Not Supported Mistral NeMo Not Supported Mixtral 8x22B Not Supported OpenAI Supported OpenAI o1 Supported Pinecone Supported pytest Supported Show More Integrations View All 15 Integrations	Integrations Claude Supported DeepEval Not Supported GPT-3.5 Supported GPT-4 Supported Gemini 1.5 Pro Supported Gemini 2.0 Supported Gemini 2.0 Flash Supported Gemini Nano Supported Google AI Plus Supported Hugging Face Not Supported Kong AI Gateway Not Supported LlamaIndex Not Supported Mathstral Supported Ministral 8B Supported Mistral NeMo Supported Mixtral 8x22B Supported OpenAI Not Supported OpenAI o1 Not Supported Pinecone Not Supported pytest Not Supported Show More Integrations View All 25 Integrations
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