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Mistral Medium 3.5

Mistral AI · Balanced · Apr 28, 2026Open weights

Mistral's mid-tier multimodal model for agentic and coding work, with weights available under a modified MIT licence.

Announcement (opens in a new tab)
Artificial Analysis Intelligence Index
14.2#28 of 29
API price per 1M tokens
$1.50 / $7.50input / output · $3 blended
Context window
256Ktokens
Output speed
168 t/s14s to first answer

Benchmark results

Each row shows this model (blue) against every other model in the catalogue (grey), worst on the left, best on the right.

Overall capability

  • Artificial Analysis Intelligence Index14.2#28 of 29
    11.357.6

Coding

  • Arena WebDev1,263#27 of 27
    1,2631,814

Multimodal

  • Arena Vision1,199#15 of 15
    1,1991,301

Human preference

  • Arena Text1,427#23 of 24
    1,4251,525

Specs & pricing

Developer
Mistral AI
Released
Apr 28, 2026
Availability
Generally available
Weights
Open · Modified MIT
Parameters
128B
Reasoning
Adjustable effort
Accepts
Text, Image
Produces
Text
Context window
256,000 tokens
Input price
$1.50 / 1M tokens
Output price
$7.50 / 1M tokens

Closest alternatives

Models from other labs nearest to Mistral Medium 3.5 on Artificial Analysis Intelligence Index.

  • Gemma 4 31B

    Google

    Intelligence 14.7 · Self-hosted

    Compare side by side

  • Muse Glimmer 30B

    Meta

    Intelligence 17.5 · Self-hosted

    Compare side by side

  • Gemini 3.5 Flash-Lite

    Google

    Intelligence 22.2 · $0.30 / $2.50

    Compare side by side

Sources

  • Announcement (opens in a new tab)
  • Model documentation (opens in a new tab)
Yardstick

A plain reading of how today’s SI models compare. Scores are taken from each benchmark’s own leaderboard wherever one exists; anything a lab reported about its own model is marked.

Data as of Oct 8, 2026.

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Sources

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