GPT-5.6 Sol launch post cover

Cost/1M tokens

input
$4.40
cached
$0.44
output
$22.00
cache write
$5.50
Context
1.1Mtokens
Released
4mo 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

#4 of 28

Arena Text

Best Arena rating per model · Higher is better

Arena #22

  1. 1511
    Muse WonderSimilar price
  2. 1506
    Claude Opus 5.5Similar price
  3. 1503
    Claude Opus 4.6Similar price
  4. 1487
  5. 1486
  6. 1485
    GPT-5.6 Sol
  7. 1484
    Qwen3.8 MaxNearby rank
  8. 1483
    Kimi K3.1 ProNearby rank
  9. 1481
    GPT-5.5Predecessor

Level with GPT-5.5 (predecessor, overlapping 95% CIs) · Ahead of 0 of 4 similarly priced models

Arena WebDev

Best Arena rating per model · Higher is better

Arena #33

  1. 1814
    Claude Opus 5.5Similar price
  2. 1691
    Claude Opus 5Similar price
  3. 1649
    Muse WonderSimilar price
  4. 1621
  5. 1618
    Grok 4.6Nearby rank
  6. 1615
    GPT-5.6 Sol
  7. 1609
    GLM 5.3 FlashNearby rank
  8. 1609
    Muse EmberNearby rank
  9. 1512
    GPT-5.5Predecessor
  10. 1446

+103 vs GPT-5.5 (predecessor) · Ahead of 1 of 4 similarly priced models

Arena Vision

Best Arena rating per model · Higher is better

Arena #16

  1. 1300
    Claude Opus 4.7Similar price
  2. 1299
    Claude Opus 4.6Similar price
  3. 1295
    Claude Opus 5.5Similar price
  4. 1289
  5. 1289
    Claude Fable 5.1Nearby rank
  6. 1288
    GPT-5.6 Sol
  7. 1286
    Claude Opus 4.8Nearby rank
  8. 1285
    Claude Opus 5Nearby rank
  9. 1285
    GPT-5.5Predecessor
  10. 1280

Level with GPT-5.5 (predecessor, overlapping 95% CIs) · Ahead of 0 of 4 similarly priced models

Arena Search

Best Arena rating per model · Higher is better

Arena #1

  1. 1255
    GPT-5.6 Sol
  2. 1248
    GPT-6.1 SolNearby rank
  3. 1245
    GPT-6 AstraNearby rank
  4. 1213
    Claude Opus 5Similar price
  5. 1213
    Claude Opus 5.5Similar price
  6. 1210
    Claude Opus 4.7Similar price
  7. 1142
    Sonar ProSimilar price

Ahead of 4 of 4 similarly priced models

Arena Document

Best Arena rating per model · Higher is better

Arena #7

  1. 1497
    Claude Opus 4.6Similar price
  2. 1494
    Claude Opus 4.7Similar price
  3. 1486
    GPT-5.6 Sol
  4. 1486
    Claude Opus 5Similar price
  5. 1485
    Claude Opus 4.8Nearby rank
  6. 1481
    GPT-5.5Predecessor
  7. 1459

Level with GPT-5.5 (predecessor, overlapping 95% CIs) · Ahead of 1 of 4 similarly priced models

Agent Arena

Best IPS score per model · Higher is better

Arena #16

  1. +0.195
    Claude Opus 5.5Similar price
  2. +0.072
    Claude Opus 5Similar price
  3. +0.053
    Hy4Nearby rank
  4. +0.049
    Kimi K3.1 ProNearby rank
  5. +0.046
    GPT-5.6 Sol
  6. +0.026
    Grok 4.7Nearby rank
  7. +0.025
    Inkling 2 SmallNearby rank
  8. +0.018
    Muse WonderSimilar price
  9. -0.045

Ahead of 2 of 4 similarly priced models

ARC-AGI-2

Best score per model · Higher is better

#6 of 85

  1. 93.8%
    Claude Fable 5.2Nearby rank
  2. 93.3%
    Claude Opus 5.5Similar price
  3. 92.5%
    GPT-5.6 Sol
  4. 91.3%
    Gemini 4 ArgonNearby rank
  5. 90.0%
    Claude Fable 5.1Nearby rank
  6. 88.3%
    Claude Opus 5Similar price
  7. 85.0%
    GPT-5.5Predecessor
  8. 77.1%
  9. 75.8%
    Claude Opus 4.7Similar price

+7.5 pts vs GPT-5.5 (predecessor) · Ahead of 3 of 4 similarly priced models

FrontierMath-Tier-4-v2-Private

Best score per model · Higher is better

#10 of 72

  1. 95.0%
    Claude Opus 5.5Similar price
  2. 90.0%
    GPT-6 SolNearby rank
  3. 87.8%
    Claude Fable 5.1Nearby rank
  4. 82.9%
    GPT-5.6 Sol
  5. 80.5%
  6. 78.0%
    Gemini 4 ArgonNearby rank
  7. 73.2%
    Claude Opus 5Similar price
  8. 72.5%
    GPT-5.5Predecessor
  9. 56.1%
    Claude Opus 4.8Similar price
  10. 26.8%

+10.4 pts vs GPT-5.5 (predecessor) · Ahead of 3 of 4 similarly priced models

FrontierMath-Tiers-1-3-v2-Private

Best score per model · Higher is better

#9 of 87

  1. 91.2%
    Claude Opus 5.5Similar price
  2. 90.2%
    Claude Fable 5.1Nearby rank
  3. 89.8%
    GPT-6 SolNearby rank
  4. 89.1%
    GPT-5.6 Sol
  5. 88.8%
  6. 87.7%
    GPT-5.5 ProNearby rank
  7. 85.6%
    Claude Opus 5Similar price
  8. 85.3%
    GPT-5.5Predecessor
  9. 80.0%
    Claude Opus 4.8Similar price
  10. 59.6%

+3.9 pts vs GPT-5.5 (predecessor) · Ahead of 3 of 4 similarly priced models

GPQA diamond

Best score per model · Higher is better

#16 of 161

  1. 94.4%
  2. 93.9%
    Claude Fable 5.2Nearby rank
  3. 93.9%
    Claude Opus 5Similar price
  4. 93.5%
    GPT-5.6 Sol
  5. 93.4%
    Grok 4.5Nearby rank
  6. 93.3%
    GPT-5.6 TerraNearby rank
  7. 91.0%
    Claude Opus 4.8Similar price
  8. 90.7%
    GPT-5.5Predecessor
  9. 90.6%
    Claude Opus 5.5Similar price

+2.8 pts vs GPT-5.5 (predecessor) · Ahead of 2 of 4 similarly priced models

OSWorld 2.0

Best score per model · Higher is better

#2 of 9

  1. 31.4%
    Claude Opus 5Similar price
  2. 27.3%
    GPT-5.6 Sol
  3. 18.5%
    Claude Opus 4.8Similar price
  4. 13.9%
    Claude Opus 4.7Similar price
  5. 13.0%
    GPT-5.5Predecessor
  6. 9.3%
    Claude Sonnet 4.6Similar price

+14.3 pts vs GPT-5.5 (predecessor) · Ahead of 3 of 4 similarly priced models

OTIS Mock AIME 2024-2025

Best score per model · Higher is better

#1 of 158

  1. 100.0%
    Claude Opus 5.5Similar price
  2. 100.0%
    Gemini 4 ArgonNearby rank
  3. 100.0%
    Gemini 4 CarbonNearby rank
  4. 100.0%
    GPT-5.6 Sol
  5. 100.0%
    GPT-6 AstraNearby rank
  6. 100.0%
    GPT-6 SolNearby rank
  7. 98.9%
    Claude Opus 5Similar price
  8. 98.3%
    Claude Opus 4.8Similar price
  9. 95.6%
  10. 84.4%
    GPT-5.5Predecessor

+15.6 pts vs GPT-5.5 (predecessor) · Ahead of 3 of 4 similarly priced models

SimpleQA Verified

Best score per model · Higher is better

#10 of 87

  1. 73.5%
  2. 72.2%
    Claude Opus 5.5Similar price
  3. 70.7%
    Claude Fable 5Nearby rank
  4. 69.7%
    Gemini 3.8 FlashNearby rank
  5. 69.7%
    GPT-5.6 Sol
  6. 69.2%
    Gemini 3.7 FlashNearby rank
  7. 66.8%
  8. 63.0%
    GPT-5.5Predecessor
  9. 59.9%
    Claude Opus 5Similar price
  10. 53.0%
    Claude Opus 4.8Similar price

+6.7 pts vs GPT-5.5 (predecessor) · Ahead of 2 of 4 similarly priced models

DeepSWE 1.1

Primary coding-agent benchmark · 113 tasks · Data generated 2026-09-22

Official leaderboard
72.7%
pass@1 · highest published configuration
mini-swe-agent · max reasoning
pass@4
85.8%
Average cost / attempt
$8.39
Benchmark runs
4

Score vs cost by reasoning effort

Average cost per attempt (USD) against pass rate

All published configurations

Harness / reasoningpass@1pass@4Cost / attempt
mini-swe-agent · max72.7%85.8%$8.39
mini-swe-agent · xhigh70.7%85.8%$4.70
mini-swe-agent · high69.4%86.7%$3.47
mini-swe-agent · medium61.1%80.5%$1.86
mini-swe-agent · low45.4%71.7%$1.07

pass@1 is the success rate across scored attempts; pass@4 is the share of tasks solved in at least one of four attempts. Costs are reported by DeepSWE for each configuration. These results are not directly comparable to evaluations using different harnesses. Official source JSON.

Reasoning effort

ARC-AGI-2

Score by reasoning effort · Higher is better

GPQA diamond

Score by reasoning effort · Higher is better

OTIS Mock AIME 2024-2025

Score by reasoning effort · Higher is better

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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