Mistral Medium 3.5

Mistral AI
Mistral Medium 3.5 launch post cover

Cost/1M tokens

input
$1.50
output
$7.50
Context
262Ktokens
Released
6mo ago
Size
128Bparameters

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Arena leaderboards and other sourced evaluations appear below; missing scores are not zero.

How it ranks

Against its predecessor, similarly priced models and the models ranked around it.

DeepSWE 1.1

Best pass@1 per model · Higher is better

Not evaluated in DeepSWE 1.1

Arena Text

Best Arena rating per model · Higher is better

Arena #121

  1. 1483
    Kimi K3.1 ProSimilar price
  2. 1478
    Gemini 3.5 FlashSimilar price
  3. 1466
    Grok 4.5Similar price
  4. 1455
    GPT-5.1Similar price
  5. 1430
    MiMo-V2-OmniNearby rank
  6. 1430
  7. 1427
    Mistral Medium 3.5
  8. 1426
    Nemotron 3 UltraNearby rank
  9. 1426
    Claude Opus 4Nearby rank
  10. 1408

+18 vs Mistral Medium 3.1 (predecessor) · Ahead of 0 of 4 similarly priced models

Arena WebDev

Best Arena rating per model · Higher is better

Arena #140

  1. 1676
    Qwen3.8 Max (0902)Similar price
  2. 1641
    Grok 4.7Similar price
  3. 1500
    Gemini 3.5 FlashSimilar price
  4. 1417
    GPT-5Similar price
  5. 1299
    MiniMax-M2Nearby rank
  6. 1270
  7. 1263
    Mistral Medium 3.5
  8. 1256
  9. 1253
    Qwen3.5-35B-A3BNearby rank

Ahead of 0 of 4 similarly priced models

Arena Vision

Best Arena rating per model · Higher is better

Arena #94

  1. 1281
    Gemini 3.5 FlashSimilar price
  2. 1280
    Grok 4.5Similar price
  3. 1263
    Claude Sonnet 5.5Similar price
  4. 1251
    GPT-5.1Similar price
  5. 1201
    GPT-4.1 MiniNearby rank
  6. 1200
  7. 1199
    Mistral Medium 3.5
  8. 1199
    GPT-5.4 NanoNearby rank
  9. 1196
  10. 1160

+40 vs Mistral Medium 3.1 (predecessor) · Ahead of 0 of 4 similarly priced models

Arena Search

Best Arena rating per model · Higher is better

Not ranked on Arena Search yet

Arena Document

Best Arena rating per model · Higher is better

Not ranked on Arena Document yet

Agent Arena

Best IPS score per model · Higher is better

Arena #54

  1. +0.170
    Gemini 4 CarbonSimilar price
  2. +0.160
    Claude Sonnet 5.5Similar price
  3. +0.049
    Kimi K3.1 ProSimilar price
  4. +0.026
    Grok 4.7Similar price
  5. -0.082
    Muse Spark 1.2Nearby rank
  6. -0.105
    MiniMax M3Nearby rank
  7. -0.137
    Mistral Medium 3.5
  8. -0.156
    Nemotron 3 UltraNearby rank
  9. -0.173
    InklingNearby rank

Ahead of 0 of 4 similarly priced models

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

All published scores

Arena ratings: Arena (lmarena-ai/leaderboard-dataset), licensed CC BY 4.0. Ratings come from pairwise human votes and are only comparable within one leaderboard; the interval is Arena's 95% confidence interval. Model names are matched to the Vertical Tabs catalog.

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