GPT-6.1 Terra

OpenAI
GPT-6.1 Terra launch post cover

Cost/1M tokens

input
$1.00
cached
$0.05
output
$5.00
cache write
$1.25
Context
1.1Mtokens
Listed
2w 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

Not ranked on Arena Text yet

Arena WebDev

Best Arena rating per model · Higher is better

Arena #13

  1. 1688
    Kimi K3.1 ProNearby rank
  2. 1682
    Gemini 4 ArgonNearby rank
  3. 1679
    GPT-6.1 Terra
  4. 1676
  5. 1673
    GPT-6 SolNearby rank
  6. 1655
    Muse Spark 1.3Similar price
  7. 1520
    GPT-5.6 TerraPredecessor
  8. 1515
    Qwen3.7 MaxSimilar price
  9. 1399
    GLM 5V TurboSimilar price
  10. 1330
    Claude Haiku 4.5Similar price

+158 vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

Arena Vision

Best Arena rating per model · Higher is better

Not ranked on Arena Vision yet

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 #8

  1. +0.145
    GPT-6 AstraNearby rank
  2. +0.125
    GPT-6.1 SolNearby rank
  3. +0.120
    GPT-6.1 Terra
  4. +0.107
    Gemini 4 ArgonNearby rank
  5. +0.090
    Muse Wonder FullNearby rank
  6. +0.022
    Muse Spark 1.3Similar price
  7. +0.002
    GLM 5.2Similar price
  8. -0.018
    GPT-5.6 TerraPredecessor
  9. -0.072
    Qwen3.7 MaxSimilar price
  10. -0.173
    InklingSimilar price

+0.138 vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

FrontierMath-Tier-4-v2-Private

Best score per model · Higher is better

#6 of 72

  1. 95.1%
    Gemini 4 CarbonNearby rank
  2. 95.0%
    Claude Opus 5.5Nearby rank
  3. 92.7%
    GPT-6.1 Terra
  4. 90.2%
    Claude Fable 5Nearby rank
  5. 90.0%
    GPT-6 SolNearby rank
  6. 70.7%
    GPT-5.6 TerraPredecessor
  7. 46.3%
    Muse Spark 1.3Similar price
  8. 34.1%
    Qwen3.7 MaxSimilar price
  9. 29.3%
    GLM 5.2Similar price
  10. 4.9%
    InklingSimilar price

+22.0 pts vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

FrontierMath-Tiers-1-3-v2-Private

Best score per model · Higher is better

#5 of 87

  1. 93.7%
    GPT-6.1 SolNearby rank
  2. 91.2%
    Claude Opus 5.5Nearby rank
  3. 90.9%
    GPT-6.1 Terra
  4. 90.5%
    Gemini 4 CarbonNearby rank
  5. 90.2%
    Claude Fable 5.1Nearby rank
  6. 86.0%
    GPT-5.6 TerraPredecessor
  7. 74.4%
    Muse Spark 1.3Similar price
  8. 64.6%
    Qwen3.7 MaxSimilar price
  9. 36.8%
    GLM 5.1Similar price
  10. 33.3%
    InklingSimilar price

+4.9 pts vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

GPQA diamond

Best score per model · Higher is better

#10 of 161

  1. 94.4%
  2. 94.3%
    GPT-6 SolNearby rank
  3. 94.3%
    GPT-6.1 Terra
  4. 94.1%
    Gemini 3.6 FlashNearby rank
  5. 94.0%
    Grok 4.6Nearby rank
  6. 93.3%
    GPT-5.6 TerraPredecessor
  7. 90.9%
    Qwen3.7 MaxSimilar price
  8. 89.9%
    GLM 5.1Similar price
  9. 88.3%
    InklingSimilar price
  10. 71.2%
    Claude Haiku 4.5Similar price

+1.0 pts vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

OTIS Mock AIME 2024-2025

Best score per model · Higher is better

#1 of 158

  1. 100.0%
    GPT-6 SolNearby rank
  2. 100.0%
    GPT-6.1 SolNearby rank
  3. 100.0%
    GPT-6.1 Terra
  4. 100.0%
  5. 99.7%
    Claude Fable 5.2Nearby rank
  6. 99.7%
    GPT-5.6 TerraPredecessor
  7. 99.2%
    Muse Spark 1.3Similar price
  8. 95.6%
    Qwen3.7 MaxSimilar price
  9. 93.3%
    GLM 5.1Similar price
  10. 66.7%
    Claude Haiku 4.5Similar price

+0.3 pts vs GPT-5.6 Terra (predecessor) · Ahead of 4 of 4 similarly priced models

SimpleQA Verified

Best score per model · Higher is better

#21 of 87

  1. 60.3%
    Muse Spark 1.2Similar price
  2. 59.9%
    Claude Opus 5Nearby rank
  3. 57.8%
    Muse Spark 1.1Nearby rank
  4. 57.3%
    GPT-6.1 Terra
  5. 56.0%
    Grok 4.7Nearby rank
  6. 55.8%
    Qwen3.7 MaxSimilar price
  7. 43.2%
    GPT-5.6 TerraPredecessor
  8. 34.0%
    GLM 5.1Similar price
  9. 13.2%
    Claude Haiku 4.5Similar price

+14.1 pts vs GPT-5.6 Terra (predecessor) · Ahead of 3 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 WebDevArena #131679

    +158 vs GPT-5.6 Terra (predecessor)

    • max167995% CI 1668 to 1689 · 3,944 votes
  • Agent ArenaArena #8+0.120

    +0.138 vs GPT-5.6 Terra (predecessor)

    • max+0.12095% CI +0.107 to +0.133 · 8,572,270 observations
  • FrontierMath-Tier-4-v2-Private#6 of 7292.7%

    +22.0 pts vs GPT-5.6 Terra (predecessor)

    • max92.7%
  • FrontierMath-Tiers-1-3-v2-Private#5 of 8790.9%

    +4.9 pts vs GPT-5.6 Terra (predecessor)

    • max90.9%
  • GPQA diamond#10 of 16194.3%

    +1.0 pts vs GPT-5.6 Terra (predecessor)

    • max94.3%
  • OTIS Mock AIME 2024-2025#1 of 158100.0%

    +0.3 pts vs GPT-5.6 Terra (predecessor)

    • max100.0%
  • SimpleQA Verified#21 of 8757.3%

    +14.1 pts vs GPT-5.6 Terra (predecessor)

    • max57.3%

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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