d83b569f17
This commit significantly refactors how assistant message content containing reasoning steps (<think> blocks) and tool calls is parsed and split into final output text and streamed reasoning text in `ThreadContent.tsx`. It introduces new logic to correctly handle multiple, open, or closed `<think>` tags, ensuring that: 1. All text outside of `<think>...</think>` tags is correctly extracted as final output text. 2. Content inside all `<think>` tags is aggregated as streamed reasoning text. 3. The message correctly determines if reasoning is actively loading during a stream. Additionally, this commit: * **Fixes infinite tool loop prevention:** The global `toolStepCounter` in `completion.ts` is replaced with an explicit `currentStepCount` parameter passed recursively in `postMessageProcessing`. This ensures that the tool step limit is correctly enforced per message chain, preventing potential race conditions and correctly resolving the chain. * **Fixes large step content rendering:** Limits the content of a single thinking step in `ThinkingBlock.tsx` to 1000 characters to prevent UI slowdowns from rendering extremely large JSON or text outputs.
Jan - Open-source ChatGPT replacement
Getting Started - Community - Changelog - Bug reports
Jan is bringing the best of open-source AI in an easy-to-use product. Download and run LLMs with full control and privacy.
Installation
The easiest way to get started is by downloading one of the following versions for your respective operating system:
| Platform | Download |
| Windows | jan.exe |
| macOS | jan.dmg |
| Linux (deb) | jan.deb |
| Linux (AppImage) | jan.AppImage |
Download from jan.ai or GitHub Releases.
Features
- Local AI Models: Download and run LLMs (Llama, Gemma, Qwen, GPT-oss etc.) from HuggingFace
- Cloud Integration: Connect to GPT models via OpenAI, Claude models via Anthropic, Mistral, Groq, and others
- Custom Assistants: Create specialized AI assistants for your tasks
- OpenAI-Compatible API: Local server at
localhost:1337for other applications - Model Context Protocol: MCP integration for agentic capabilities
- Privacy First: Everything runs locally when you want it to
Build from Source
For those who enjoy the scenic route:
Prerequisites
- Node.js ≥ 20.0.0
- Yarn ≥ 1.22.0
- Make ≥ 3.81
- Rust (for Tauri)
Run with Make
git clone https://github.com/janhq/jan
cd jan
make dev
This handles everything: installs dependencies, builds core components, and launches the app.
Available make targets:
make dev- Full development setup and launchmake build- Production buildmake test- Run tests and lintingmake clean- Delete everything and start fresh
Manual Commands
yarn install
yarn build:tauri:plugin:api
yarn build:core
yarn build:extensions
yarn dev
System Requirements
Minimum specs for a decent experience:
- macOS: 13.6+ (8GB RAM for 3B models, 16GB for 7B, 32GB for 13B)
- Windows: 10+ with GPU support for NVIDIA/AMD/Intel Arc
- Linux: Most distributions work, GPU acceleration available
For detailed compatibility, check our installation guides.
Troubleshooting
If things go sideways:
- Check our troubleshooting docs
- Copy your error logs and system specs
- Ask for help in our Discord
#🆘|jan-helpchannel
Contributing
Contributions welcome. See CONTRIBUTING.md for the full spiel.
Links
- Documentation - The manual you should read
- API Reference - For the technically inclined
- Changelog - What we broke and fixed
- Discord - Where the community lives
Contact
- Bugs: GitHub Issues
- Business: hello@jan.ai
- Jobs: hr@jan.ai
- General Discussion: Discord
License
Apache 2.0 - Because sharing is caring.
Acknowledgements
Built on the shoulders of giants: