Related Products
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About
Kerlig is an AI-powered writing assistant for Mac that helps users save time and improve their communication at work by integrating with all apps. It supports multi-language features and allows you to proofread, summarize, translate, and extract key points from PDFs, documents, and web pages.
Custom Actions and presets make it adaptable to your workflow.
Custom Actions allow for editing prompts to make the AI model perform exactly what you need. Invoke them with a single click or a keyboard shortcut.
Presets are personalized settings for AI models that give them a specific personality and guide their actions based on your preferences. For example, they can help the AI write emails in your style or take on roles like a software engineer or copywriter.
Kerlig supports over 350 AI models, including providers like OpenAI, Google Gemini, Anthropic Claude, Perplexity, AWS Bedrock, OpenRouter, and more. It also supports running local models via Ollama and LM Studio integrations.
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About
PromptUnit cuts your AI API bill without hurting answer quality. Inferio, the engine inside PromptUnit, checks every request your app or agent sends. When a cheaper model is just as good for that request, it uses it; otherwise the request goes to the model you asked for. If you connect keys for more than one provider, the cheaper model can be at another of them.
Setup is two settings: point your AI API address at PromptUnit and add your PromptUnit key. Your own provider keys stay yours. Works with OpenAI, Anthropic, Google Gemini, Groq and DeepSeek keys, and with your own OpenRouter key, plus tools like n8n, Open WebUI, LibreChat and Dify.
The dashboard shows every request: the model asked for, the model that answered, what it cost and what it saved. It also groups requests into the steps of your app and shows what each step costs.
Pricing: the first $5 of savings is free, then 20% of what PromptUnit saves you, billed weekly. Nothing if it saves nothing.
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Platforms Supported
Windows
Not Supported
Mac
Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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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
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Audience
Kerlig is ideal for professionals, business owners, designers, and anyone using macOS who wants to streamline their written communication and improve productivity
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Audience
Developers, startups and teams whose apps or agents pay for AI APIs (OpenAI, Anthropic, Gemini and more) and want a lower bill without worse answers.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$47
Free Version
Not Supported
Free Trial
Supported
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Pricing
Free
Free until PromptUnit saves you money. Then 20% of what it saves, billed weekly. The first $5 of savings is free. Nothing if it saves nothing.
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Company InformationKerlig
Founded: 2024
Poland
www.kerlig.com
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Company InformationPromptUnit
Founded: 2026
Israel
www.promptunit.ai/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Claude
Supported
Claude Duet
Supported
Claude for Legal
Supported
GPT-4
Supported
Gemini
Supported
Groq
Supported
OpenAI
Supported
DeepSeek
Not Supported
GPT-3.5
Supported
Gemini 1.5 Flash
Supported
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Integrations
Claude
Supported
Claude Duet
Supported
Claude for Legal
Supported
GPT-4
Supported
Gemini
Supported
Groq
Supported
OpenAI
Supported
DeepSeek
Supported
GPT-3.5
Not Supported
Gemini 1.5 Flash
Not Supported
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