Devstral models

Strongest: Devstral 2

Devstral 2 (model ID devstral-2-2512, shipped 9 December 2025) is Mistral's open-weight agentic-coding model, launched alongside the Mistral Vibe CLI. It is a 125B-parameter dense transformer with 256K context, built for multi-file edits, repo planning, PR generation, and test running, scoring 72.2% on SWE-bench Verified. Priced at $0.40/$0.90 — meaningfully cheaper on output than Medium 3.5 ($7.50). The license is modified-MIT on the 123B (open with a large-revenue carve-out), and a companion Devstral Small 2 (24B) is clean Apache 2.0. The buyer's sentence: the budget open-weight agentic coder in Mistral's lineup, still in the 70%-SWE-bench tier after Medium 3.5 took the crown. - Provider: Mistral AI (Paris, France) - Release: 2025-12-09, status GA - Context: 256,000 tokens; max output 32,768 - Modalities: text only (no vision) - Knowledge cutoff: ~September 2025 - Headline price: $0.40 input / $0.90 output per 1M tokens - Architecture: dense 125B; companion Devstral Small 2 = 24B (Apache 2.0)