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August 14th, 2025

Jan v0.6.8: Engine fixes, new MCP tutorials, and cleaner docs
Jan v0.6.8: Engine fixes, new MCP tutorials, and cleaner docs

Highlights 🎉

v0.6.8 focuses on stability and real workflows: major llama.cpp hardening, two new MCP productivity tutorials, new model pages, and a cleaner docs structure.

🚀 New tutorials & docs

  • Linear MCP tutorial: create/update issues, projects, comments, cycles — directly from chat
  • Todoist MCP tutorial: add, list, update, complete, and delete tasks via natural language
  • New model pages:
    • Lucy (1.7B) — optimized for web_search tool calling
    • Jan‑v1 (4B) — strong SimpleQA (91.1%), solid tool use
  • Docs updates:
    • Reorganized landing and Products sections; streamlined QuickStart
    • Ongoing Docs v2 (Astro) migration with handbook, blog, and changelog sections added and then removed

🧱 Llama.cpp engine: stability & correctness

  • Structured error handling for llama.cpp extension
  • Better argument handling, improved model path resolution, clearer error messages
  • Device parsing tests; conditional Vulkan support; support for missing CUDA backends
  • AVX2 instruction support check (Mac Intel) for MCP
  • Server hang on model load — fixed
  • Session management & port allocation moved to backend for robustness
  • Recommended labels in settings; per‑model Jinja template customization
  • Tensor buffer type override support
  • “Continuous batching” description corrected

✨ UX polish

  • Thread sorting fixed; assistant dropdown click reliability improved
  • Responsive left panel text color; provider logo blur cleanup
  • Show toast on download errors; context size error dialog restored
  • Prevent accidental message submit for IME users
  • Onboarding loop fixed; GPU detection brought back
  • Connected MCP servers status stays in sync after JSON edits

🔍 Hub & providers

  • Hugging Face token respected for repo search and private README visualization
  • Deep links and model details fixed
  • Factory reset unblocked; special chars in modelId handled
  • Feature toggle for auto‑updater respected

🧪 CI & housekeeping

  • Nightly/PR workflow tweaks; clearer API server logs
  • Cleaned unused hardware APIs
  • Release workflows updated; docs release paths consolidated

🤖 Reasoning model fixes

  • gpt‑oss “thinking block” rendering fixed
  • Reasoning text no longer included in chat completion requests

Thanks to new contributors

· @cmppoon · @shmutalov · @B0sh

Update your Jan or download the latest (opens in a new tab).

For the complete list of changes, see the GitHub release notes (opens in a new tab).