Mistral Medium 3.5
Balanced Mistral model for enterprise assistants, multilingual work, and tools
ECI STANDING#102 of 266
SCORE141.28139.38–143.28 CI
FRONTIER LAGLaunched 16.3 months behindScores about what o1 did in December 2024.
SCORES LIKE THESE MODELSClaude Sonnet 4Anthropic · May 2025141.69
Full Epoch Capabilities Index ranking ↗Gemini 2.5 Flash (May 2025)Google DeepMind · May 2025141.54
DeepSeek-R1 (May 2025)DeepSeek · May 2025141.29
Claude 3.7 SonnetAnthropic · Feb 2025141.16
RELEASE DATEApr 29, 2026
WEIGHTSOpen weights
CONTEXT WINDOW262.1K
MAX OUTPUT262.1K
REASONINGYes
TOOL CALLINGYes
INPUTStext, image
OUTPUTStext
Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.