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Codestral 2405

Mistral AI · 2024-05-29 · 22.2B parameters

Codestral 2405 is Mistral AI's first code model, a dense 22B open-weight model released on May 29, 2024 for code generation, fill-in-the-middle completion, and instruct-style code assistance across 80+ programming languages. It supports a 32,768-token context and uses Mistral's SentencePiece-based v3 tokenizer. The weights are licensed under the Mistral AI Non-Production License for research and testing; Mistral offered separate commercial licenses on request and retired the hosted `codestral-2405` snapshot on June 16, 2025.

Benchmark scores

BenchmarkScore
BBH (Open LLM Leaderboard v2)51.4
BigCodeBench Complete52.5
BigCodeBench Instruct41.8
BigCodeBench-Hard Complete24.3
BigCodeBench-Hard Instruct16.9
Capability110.6
GPQA (Open LLM Leaderboard v2)29.9
IFEval (Open LLM Leaderboard v2)57.7
MATH Level 5 (Open LLM Leaderboard v2)10.0
MMLU-Pro (Open LLM Leaderboard v2)31.6
MuSR (Open LLM Leaderboard v2)41.9
SWE-Bench Pro (Public Dataset)1.5
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