---
title: "Jan v0.6.8: Engine fixes, new MCP tutorials, and cleaner docs"
version: 0.6.8
description: "Llama.cpp stability upgrades, Linear/Todoist MCP tutorials, new model pages (Lucy, Jan‑v1), and docs reorganization"
date: 2025-08-14
ogImage: "https://catalog.jan.ai/docs/mcplinear2.gif"
---

import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
import { Callout } from 'nextra/components'

<ChangelogHeader title="Jan v0.6.8: Engine fixes, new MCP tutorials, and cleaner docs" date="2025-08-14" ogImage="https://catalog.jan.ai/docs/mcplinear2.gif" />

## 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](https://jan.ai/).

For the complete list of changes, see the [GitHub release notes](https://github.com/menloresearch/jan/releases/tag/v0.6.8).