Kerlig
In-context AI writing assistant for macOS integrating 350+ models.
Pricing
About Kerlig
Kerlig is an AI writing assistant designed for macOS that integrates seamlessly into your workflow without requiring context switching. It supports over 350 AI models including OpenAI, Anthropic, Google, Groq, and OpenRouter, allowing you to use your preferred AI providers with your own API keys. The tool helps with writing emails, Slack replies, Jira tickets, proofreading, grammar correction, and chatting with documents like PDFs, webpages, and images. The platform is built for professionals and teams who want to enhance their written communication at work while maintaining privacy. Users can customize actions to fit their workflow, use global hotkeys for faster access, and leverage reasoning models for multi-step research. Messages are sent directly to AI providers and encrypted on the user's Mac. One notable limitation is that it's exclusively available for macOS, limiting accessibility for Windows or Linux users.
At a glance
- Platforms
- macOS
- API
- Available
- Integrations
- OpenAI, Anthropic, Google, Groq, OpenRouter, Ollama, LM Studio, Apple Foundation Models
- Last verified
- June 2026
Who It's For
- •macOS users seeking efficient writing assistance
- •Professionals and teams in business environments
- •Students and academics
- •Content creators and writers
- •Enterprise teams requiring remote deployment options
How It Works
- 1Integrates directly into any macOS application using a global shortcut (Option + Space)
- 2Connects to 350+ AI models via user-provided API keys from providers like OpenAI, Anthropic, and Google
- 3Processes text, documents, and images locally on the user's Mac with encryption
- 4Sends requests directly to selected AI providers and stores responses encrypted on the device
- 5Supports both cloud-based models and local models (Apple Foundation Models, Ollama, LM Studio)
- 6Allows switching between models with a single click
How to Use Kerlig
- 1Download and install the macOS app for Apple Silicon or Intel Macs (macOS 12+)
- 2Purchase a license (Basic, Pro, or Team) with a one-time payment starting at $49
- 3Add your API keys for preferred AI providers (OpenAI, Anthropic, Google, Groq, OpenRouter)
- 4Use Option + Space shortcut to open Kerlig in any application
- 5Select from built-in actions (Fix spelling, Improve writing, Summarize) or create custom actions
- 6Switch between 350+ models with one click for different tasks
- 7Attach and chat with documents, webpages, or images for analysis and summaries
Key Features
- •350+ AI model support with one-click switching
- •Built-in and custom actions for writing tasks
- •Document attachment and analysis (PDFs, ebooks, images)
- •Grammar and spelling correction
- •Writing tone personalization and customization
- •Global hotkeys and shortcuts for quick access
- •Chat interface with message editing capabilities
- •Chat history and citations with linked sources
- •Reasoning models with chain-of-thought visibility
- •Local model support (Apple Foundation Models, Ollama, LM Studio)
- •Team deployment via CLI
- •Deep research using reasoning models with online data
- •Privacy-first architecture with local encryption
Use Cases
- •Writing and proofreading professional emails and Slack messages
- •Fixing grammar and spelling errors in real-time before sending
- •Summarizing long documents, webpages, and PDFs
- •Creating Jira tickets and technical documentation
- •Overcoming writer's block and tailoring writing tone for different contexts
Pros & Cons
Advantages
- •Eliminates context switching by integrating directly into any macOS app without leaving your workflow
- •Supports 350+ AI models with user-provided API keys, giving maximum flexibility and control over costs
- •No subscription required—single lifetime purchase with per-token pricing model
- •Privacy-focused design with end-to-end encryption and direct communication to AI providers
Disadvantages
- •Exclusive to macOS platform, making it inaccessible for Windows and Linux users
- •Requires manually providing API keys from AI providers, adding setup complexity for less technical users
- •Limited to working within macOS applications, reducing cross-platform utility
Alternatives
See all Kerlig alternatives →- Bearly AI
- ChatGPT for Google
- Ask Your PDF
- ChatGPT Plus
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Frequently Asked Questions
What is Kerlig?
Kerlig is an AI writing assistant designed for macOS that integrates seamlessly into your workflow without requiring context switching. It supports over 350 AI models including OpenAI, Anthropic, Google, Groq, and OpenRouter, allowing you to use your preferred AI providers with your own API keys.
How much does Kerlig cost?
Kerlig has paid plans starting at $47.
Is Kerlig free?
Kerlig is a paid tool and does not offer a free plan.
What are the best Kerlig alternatives?
Popular Kerlig alternatives include Bearly AI, ChatGPT for Google, Ask Your PDF.
What is Kerlig used for?
Kerlig is commonly used for Writing and proofreading professional emails and Slack messages, Fixing grammar and spelling errors in real-time before sending, Summarizing long documents, webpages, and PDFs.
Does Kerlig have an API?
Yes, Kerlig offers an API for developers.
What platforms does Kerlig support?
Kerlig is available on macOS.
Information Accuracy
Please note: While we regularly update all tool information including descriptions, features, pricing, and other details, this information may change over time as tools evolve and update their offerings. For the most current and accurate information, we recommend visiting the official website directly. Our goal is to provide you with comprehensive and up-to-date information to help you make informed decisions.