Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.

The best alternative to Claude Code is Mellum, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Claude Code and seven of them are so hopefully you can find a suitable replacement. Other interesting alternatives to Claude Code are JetBrains Junie, Mistral Code, JetBrains AI Assistant and Hostinger Horizons.
Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.

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