JetBrains releases Mellum2.1 for coding agents
JetBrains says Mellum2.1 can handle repository tasks while running locally or on a developer’s own infrastructure.
• JetBrains released Mellum2.1, an open model for coding agents, on Hugging Face.
• The company says new training helps it explore repositories, edit files and check changes.
• JetBrains reports coding and speed gains; GGUF builds and a multi-token prediction head are coming soon.
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October 9, 2026 18
