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JetBrains AI Assistant with mittwald

JetBrains AI Assistant supports OpenAI-compatible endpoints via Bring Your Own Key (BYOK). This works with all JetBrains IDEs including IntelliJ IDEA, PHPStorm, WebStorm, PyCharm, and more.

Prerequisites​

  • JetBrains IDE (IntelliJ, PHPStorm, WebStorm, etc.)
  • mittwald AI Hosting API key (how to get one)

Configuration​

  1. Open Settings | Tools | AI Assistant | Models & API keys
  2. Under "Third-party AI providers", select OpenAI-compatible
  3. Enter your configuration:
    • API Key: Your mittwald LLM API key
    • Endpoint URL: https://llm.aihosting.mittwald.de/v1
  4. Test the connection
  5. (Optional) Enable "Tool calling" if the model should use MCP tools

Model Selection​

Select Qwen3.5-122B-A10B-FP8 from the model dropdown. This model supports:

  • Code generation and completion
  • Chat and documentation
  • Vision capabilities
  • Tool use and agentic workflows

Want faster replies at a small quality cost instead? Switch to Qwen3.8-27B-NVFP4, which is also vision-capable (up to 5 images per request).

Note on JetBrains AI Subscription​

Some AI Assistant features may require a JetBrains AI subscription even when using third-party providers like mittwald. Check JetBrains documentation for current subscription requirements.

Alternative: Continue Plugin​

If you prefer a different integration, you can also use the Continue plugin which works with JetBrains IDEs and is fully open source.

Next Steps​