# GPT-5.6 TerraMedium

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OpenAI

Canonical URL: https://benchize.com/models/gpt-5-6-terra-medium
Last updated: Thu, 22 Oct 2026 09:10:07 GMT

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OpenAI

## Benchmarks

| Benchmark | Score | ± | Rank | Cost | Latency | Source |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [ToneBench Scriptwriting](https://benchize.com/benchmarks/tonebench%3Ascripts.md) | 1,968.9 | Range 1,935.7–2,006.1 | 37 / 126 | — | — | [tonebench](https://benchmark.towardsai.com/data/leaderboard.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1968.9 \| rating \| reported \| Higher is better \| \| `overall` \| 80.66 \| percent \| reported \| Higher is better \| \| `anti_slop_numbers` \| 72.41 \| source_score \| rubric \| Higher is better \| \| `continuity_emotion` \| 79.74 \| source_score \| rubric \| Higher is better \| \| `cue_quality` \| 77.24 \| source_score \| rubric \| Higher is better \| \| `hook_strength` \| 81.74 \| source_score \| rubric \| Higher is better \| \| `length_adherence` \| 87.11 \| source_score \| rubric \| Higher is better \| \| `slop` \| 83.41 \| source_score \| rubric \| Higher is better \| \| `slop_score` \| 94.39 \| source_score \| rubric \| Higher is better \| \| `substance_accuracy` \| 84.64 \| source_score \| rubric \| Higher is better \| \| `tone_voice` \| 78.59 \| source_score \| rubric \| Higher is better \| \| `writing_quality` \| 77.99 \| source_score \| rubric \| Higher is better \| \| `youtube_best_practices` \| 77.77 \| source_score \| rubric \| Higher is better \| ### Configuration provider codex Reasoning effort unknown scoreScope 10_task_current sourceConfiguration gpt-5-6-terra thinkingEnabled true ### Reported statistics Uncertainty Reported interval: 1,935.7–2,006.1 interval [1935.7,2006.1] rank 37 runCount 5 ### Source [Original source](https://benchmark.towardsai.com/data/leaderboard.json) Source tonebench Original model label GPT-5.6 Terra (medium) Evaluated 2026-10-11 Observed 2026-10-22T04:40:14.102Z Evidence SHA-256 `4264338337f418d3ded7ace250cad64fe12cacbd4b79a312bfaf0ae9268a01c3` Source locator `/rows/36` |  |  |  |  |  |  |  |
| [ARC-AGI-2](https://benchize.com/benchmarks/arc-prize%3Av2_Semi_Private.md) | 37.5% | — | 111 / 243 | 0.27usd per task | — | [arc prize · v2](https://arcprize.org/media/data/leaderboard/v2.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.375 \| score_fraction \| v2_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.27 \| usd_per_task \| v2_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v2_Semi_Private harness Not reported modelGroup openai-gpt-5-6-terra modelType CoT Reasoning effort medium sourceModelVersion openai-gpt-5-6-terra-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v2.json) Source arc prize Original model label GPT-5.6 Terra (Medium) Source version v2 Observed 2026-10-22T05:20:04.306Z Evidence SHA-256 `4351eb696e78113b0459e9bb5f0258318b905efef34f473dcea51ce641b0d94d` Source locator `/evaluations/161` |  |  |  |  |  |  |  |
| [NC Bench](https://benchize.com/benchmarks/nc-bench%3Aoverall.md) | 92.49% | — | 34 / 144 | — | — | [nc bench](https://www.nc-bench.com/models) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 92.49 \| percent \| reported \| Higher is better \| \| `tooling` \| 99.31 \| percent \| category \| Higher is better \| \| `creative_writing` \| 90.72 \| percent \| category \| Higher is better \| \| `language` \| 97.22 \| percent \| category \| Higher is better \| \| `utility` \| 95.58 \| percent \| category \| Higher is better \| \| `reasoning` \| 91.03 \| percent \| category \| Higher is better \| \| `text_editing` \| 98.11 \| percent \| category \| Higher is better \| \| `rule_following` \| 72.99 \| percent \| category \| Higher is better \| \| `hallucination` \| 94.98 \| percent \| category \| Higher is better \| ### Configuration Reasoning effort medium Model configuration GPT-5.6 Terra (Reasoning, Medium) thinkingEnabled true ### Source [Original source](https://www.nc-bench.com/models) Source nc bench Original model label GPT-5.6 Terra (Reasoning, Medium) Observed 2026-10-22T06:10:03.426Z Evidence SHA-256 `ec261022458543624b08a136d01f5a2f0666cd52ffb49c64d6ca983e8543d1b5` Source locator `/rows/41` |  |  |  |  |  |  |  |
| [Mystery Game Puzzles](https://benchize.com/benchmarks/epoch-ai%3Amystery_game_puzzles.md) | 10% | SE ±3.02 pp | 63 / 72 | — | — | [epoch ai · Mystery Game Puzzles](https://epoch.ai/data/benchmark_data.zip#file=mystery_game_puzzles.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.1 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.1 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion Mystery Game Puzzles reasoningBudget Not reported Reasoning effort medium sourceModelVersion gpt-5.6-terra_medium ### Reported statistics Uncertainty Standard error: ±3.02 pp standardError 0.03015113445777636 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=mystery_game_puzzles.csv) Source epoch ai Original model label gpt-5.6-terra Source version Mystery Game Puzzles Evaluated 2026-08-28T07:12:23.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `f66941ed5e9520190b66af57d2b6fd62a9582077dd25ab8764ce651bc0eca00a` Source locator `/rows/24` |  |  |  |  |  |  |  |
| [ARC-AGI-3](https://benchize.com/benchmarks/arc-prize%3Av3_Semi_Private.md) | 0.08% | — | 61 / 65 | 5,895.31usd | — | [arc prize · v3](https://arcprize.org/media/data/leaderboard/v3.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.0008 \| score_fraction \| v3_Semi_Private \| Higher is better \| \| `total_cost` \| 5895.31 \| usd \| v3_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v3_Semi_Private harness standard modelGroup openai-gpt-5-6-terra modelType CoT Reasoning effort medium sourceModelVersion openai-gpt-5-6-terra-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v3.json) Source arc prize Original model label GPT-5.6 Terra (Medium) Source version v3 Observed 2026-10-22T05:20:04.578Z Evidence SHA-256 `3ce335487296bb2dcf4ba9546c5a2a02b1907db5b08887cd9ff4429fed824916` Source locator `/evaluations/13` |  |  |  |  |  |  |  |
| [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 33.88% | — | 95 / 125 | $0.82 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.3388 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.3815 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.8189 \| USD \| per_rollout \| Lower is better \| ### Configuration harness codex Reasoning effort medium sourceVersion v1_1 subset main ### Reported statistics flaggedRate 0.001 sampleSize 100 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label GPT-5.6 Terra Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/GPT-5.6%20Terra/medium/main` |  |  |  |  |  |  |  |
| [DeepSWE](https://benchize.com/benchmarks/deepswe%3Av1.1.md) | 35.11% | Range 31.73–38.49% | 62 / 70 | $0.58 | 229.6s | [deepswe](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `pass_at_1` \| 0.3511111111111111 \| score_fraction \| scored_rollout_attempts \| Higher is better \| \| `pass_at_4` \| 0.6017699115044248 \| score_fraction \| tasks_with_one_passing_rollout \| Higher is better \| \| `cost_per_attempt` \| 0.5832493688888889 \| USD \| scored_attempt \| Lower is better \| \| `duration` \| 229.60274282444442 \| seconds \| scored_attempt \| Lower is better \| ### Configuration harness mini-swe-agent Reasoning effort medium sourceConfiguration mini_swe_agent_gpt_5_6_terra_medium ### Reported statistics Uncertainty Reported interval: 31.73–38.49% interval [0.3172914680770448,0.3849307541451774] intervalMethod 95% run-to-run: SE across repeated whole-benchmark passes (1.96 * std(runs)/sqrt(R)) runCount 4 sampleSize 450 taskCount 113 ### Source [Original source](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) Source deepswe Original model label gpt-5-6-terra Observed 2026-10-22T03:50:05.889Z Evidence SHA-256 `a7c15d66288fd249c020b9931c017b92d1a3b90e480b3ff34974b752bd030019` Source locator `/rows/61` |  |  |  |  |  |  |  |
| [ARC-AGI-1](https://benchize.com/benchmarks/arc-prize%3Av1_Semi_Private.md) | 77% | — | 117 / 245 | 0.13usd per task | — | [arc prize · v1](https://arcprize.org/media/data/leaderboard/v1.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.77 \| score_fraction \| v1_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.13 \| usd_per_task \| v1_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v1_Semi_Private harness Not reported modelGroup openai-gpt-5-6-terra modelType CoT Reasoning effort medium sourceModelVersion openai-gpt-5-6-terra-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v1.json) Source arc prize Original model label GPT-5.6 Terra (Medium) Source version v1 Observed 2026-10-22T05:20:04.066Z Evidence SHA-256 `2bf68d22dafba37047d07ad833ebc0e8199c9aa2f9eeaed50c75c1b704462836` Source locator `/evaluations/160` |  |  |  |  |  |  |  |
| [AutomationBench](https://benchize.com/benchmarks/zapier%3Aautomationbench.md) | 8.07% | — | 76 / 113 | $0.22 | — | [zapier](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/MBpMAlj5k_Qpj1iTRcXO7kAjUP_VB-QuD3gMvxxThCQ.C6QAp2jN.mjs) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 8.07 \| percent \| reported \| Higher is better \| \| `cost` \| 0.22 \| USD \| per_task \| Lower is better \| ### Configuration benchmarkVersion 1.0.6 costFootnote false Fallback policy Not reported Reasoning effort medium Model configuration GPT-5.6 Terra (Medium) thinkingEnabled true ### Reported statistics rank 86 ### Source [Original source](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/MBpMAlj5k_Qpj1iTRcXO7kAjUP_VB-QuD3gMvxxThCQ.C6QAp2jN.mjs) Source zapier Original model label GPT-5.6 Terra (Medium) Observed 2026-10-22T08:20:03.209Z Evidence SHA-256 `6f5ef9e0d3799e2bac5ae924407ac89f608f18c17f3ef238887356808b094579` Source locator `/rows/85` |  |  |  |  |  |  |  |
| [FrontierCode 1.1 extended](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Aextended.md) | 47.66% | — | 95 / 125 | $0.72 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.4766 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.529 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.7151 \| USD \| per_rollout \| Lower is better \| ### Configuration harness codex Reasoning effort medium sourceVersion v1_1 subset extended ### Reported statistics flaggedRate 0.0007 sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label GPT-5.6 Terra Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/GPT-5.6%20Terra/medium/extended` |  |  |  |  |  |  |  |

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Cite as: GPT-5.6 TerraMedium — Benchize, https://benchize.com/models/gpt-5-6-terra-medium (retrieved 2026-10-22)