Claude Sonnet 3.5 v2

Anthropic
Claude Sonnet 3.5 v2 launch post cover
Context
200Ktokens
Released
2y ago

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 #199

  1. 1378
    GLM 4.6VNearby rank
  2. 1375
  3. 1374
    Claude Sonnet 3.5 v2
  4. 1373
    GLM 4.5 AirNearby rank
  5. 1369
  6. 1271
    Qwen2.5 Coder 32B InstructSimilar release date
  7. 1267
    Aya Expanse 32BSimilar release date
  8. 1262
    Claude Haiku 3Predecessor
  9. 1238
    Ministral 8B InstructSimilar release date
  10. 1167
    Llama 3.2 3B InstructSimilar release date

+113 vs Claude Haiku 3 (predecessor) · Ahead of 4 of 4 models released around the same time

Arena WebDev

Best Arena rating per model · Higher is better

Not ranked on Arena WebDev yet

Arena Vision

Best Arena rating per model · Higher is better

Arena #111

  1. 1172
    Gemini 2.0 FlashNearby rank
  2. 1162
  3. 1161
    Claude Sonnet 3.5 v2
  4. 1161
    GLM 4.6VNearby rank
  5. 1160
    Gemma 3 27BNearby rank
  6. 1045
    Molmo 72BSimilar release date
  7. 1032
    Llama-3.2-90B-Vision-InstructSimilar release date
  8. 1025
    Pixtral 12BSimilar release date
  9. 1019
    Nova Lite 1.0Similar release date
  10. 1000
    Claude Haiku 3Predecessor

+161 vs Claude Haiku 3 (predecessor) · Ahead of 4 of 4 models released around the same time

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

Not ranked on Agent Arena yet

FrontierMath-2025-02-28-Private

Best score per model · Higher is better

#48 of 58

  1. 3.8%
    GLM 4.6Nearby rank
  2. 2.4%
    GLM 4.7Nearby rank
  3. 2.1%
    Claude Sonnet 3.5 v2
  4. 1.7%
    DeepSeek V3Nearby rank
  5. 1.0%
    Qwen MaxNearby rank
  6. 0.3%
    Mistral Large 2.1Similar release date
  7. 0.3%
    GPT-4o (2024-08-06)Similar release date
  8. 0.3%
    GPT-4o (2024-11-20)Similar release date
  9. 0.0%
    Llama 4 ScoutSimilar release date

Ahead of 4 of 4 models released around the same time

FrontierMath-Tier-4-2025-07-01-Private

Best score per model · Higher is better

#39 of 46

  1. 2.1%
    o3Similar release date
  2. 2.1%
    GPT-5.4 MiniNearby rank
  3. 0.0%
    Claude Sonnet 3.5 v2
  4. 0.0%
    Claude Sonnet 4Nearby rank
  5. 0.0%
    Kimi K2 ThinkingNearby rank
  6. 0.0%
    GPT-4.1Similar release date

Ahead of 0 of 2 models released around the same time

GPQA diamond

Best score per model · Higher is better

#131 of 161

  1. 56.1%
    Magistral SmallNearby rank
  2. 55.6%
  3. 55.3%
    Claude Sonnet 3.5 v2
  4. 51.8%
    Llama 4 ScoutNearby rank
  5. 51.3%
    Mistral Large 2.1Similar release date
  6. 47.9%
    GPT-4o (2024-11-20)Similar release date
  7. 41.8%
    Qwen TurboSimilar release date
  8. 41.0%
    Llama-3.2-90B-Vision-InstructSimilar release date
  9. 36.3%
    Claude Haiku 3Predecessor

+19.0 pts vs Claude Haiku 3 (predecessor) · Ahead of 4 of 4 models released around the same time

Humanity's Last Exam

Best score per model · Higher is better

#33 of 34

  1. 20.3%
    o3Similar release date
  2. 5.7%
    Llama 4 MaverickSimilar release date
  3. 5.4%
    GPT-4.1Similar release date
  4. 4.5%
    Mistral Medium 3Nearby rank
  5. 4.1%
    Claude Sonnet 3.5 v2
  6. 2.7%
    GPT-4o (2024-11-20)Similar release date

Ahead of 1 of 4 models released around the same time

OTIS Mock AIME 2024-2025

Best score per model · Higher is better

#136 of 158

  1. 16.1%
    Qwen MaxNearby rank
  2. 13.8%
    Phi 4Nearby rank
  3. 8.5%
    Claude Sonnet 3.5 v2
  4. 8.5%
  5. 8.1%
  6. 7.8%
    Mistral Large 2.1Similar release date
  7. 6.3%
    GPT-4o (2024-11-20)Similar release date
  8. 6.1%
    Qwen TurboSimilar release date
  9. 2.6%
    Llama-3.2-90B-Vision-InstructSimilar release date
  10. 1.8%
    Claude Haiku 3Predecessor

+6.7 pts vs Claude Haiku 3 (predecessor) · Ahead of 4 of 4 models released around the same time

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

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

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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