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Devstral Small 1.0

Mistral AI · 2025-05-21 · 23.6B parameters

Devstral Small 1.0 is a 24B agentic coding model from Mistral AI, released May 21, 2025 in collaboration with All Hands AI. Fine-tuned from Mistral Small 3.1 after its vision encoder was removed, this text-only Apache-2.0 checkpoint is designed to use tools to explore codebases, edit multiple files, and power software-engineering agents, and it supports a 131,072-token context window.

Benchmark scores

BenchmarkScore
AA-LCR26.7
AA-Omniscience Index-57.0
Artificial Analysis Intelligence Index11.8
Artificial Analysis Omniscience Accuracy15.8
Artificial Analysis Omniscience Hallucination Rate86.6
Capability122.3
CritPt0.0
GPQA Diamond43.4
Humanity's Last Exam (Text-Only)4.0
IFBench (Artificial Analysis)31.6
LisanBench Difficulty-Weighted13.2
LisanBench Path Length40.0
LiveCodeBench (Artificial Analysis)25.8
MATH-500 (Artificial Analysis source)68.4
MMLU Pro63.2
SciCode (Artificial Analysis)24.5
Terminal-Bench Hard6.1
τ²-bench (Telecom)38.0
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