Model record

GPT-5.6 Luna

max

OpenAI · released Jul 9, 2026

Overall standing

Overall
57.4rank 9 of 62
57.4 is at approximately the 86th percentile of the ranked Overall field. The field spans 19.0 to 62.2, with a median of 48.9.
7 of 8 measured · 1 estimated
Category standingsReasoning 69.6Coding 66.7Math 20.6Agentic 27.2
Reasoning
69.6rank 13 of 62
69.6 is at approximately the 80th percentile of the ranked Reasoning field. The field spans 31.6 to 73.3, with a median of 64.8.
3 of 4 measured · 1 estimated
Coding
66.7rank 13 of 46
66.7 is at approximately the 73th percentile of the ranked Coding field. The field spans 10.4 to 72.4, with a median of 56.1.
2 of 2 measured
Math
20.6rank 10 of 62
20.6 is at approximately the 85th percentile of the ranked Math field. The field spans 0.0 to 32.3, with a median of 5.3.
1 of 1 measured
Agentic
27.2rank 12 of 46
27.2 is at approximately the 75th percentile of the ranked Agentic field. The field spans 3.3 to 33.4, with a median of 19.6.
1 of 1 measured
Model factsClosed weights · $1.0 / $6.0 per 1M

Copied from the linked provider page; no separate retrieval date is stored.

Provider
OpenAI
Released
Weights
Closed weights
Context window
1,050,000 tokens
Input price / Mtok
$1.0
Output price / Mtok
$6.0
Reasoning effort
max effort

Scores and sources

Measured scores retain their source and retrieval date. Missing scores are not treated as zero.

Benchmark scores, evaluation settings, sources, and retrieval dates for GPT-5.6 Luna
BenchmarkCategoryScoreEvaluation settingsSource
Terminal-Bench v2.1Coding80.9Artificial Analysis independent run; 89 tasks; Terminus 2 on E2B; 3 repeats; pass@1; 250-episode cap; 2-hour timeoutOpen source (opens in a new tab)
τ³-BankingAgentic27.2Artificial Analysis independent run; 97 tasks; 5 repeats; backend-state pass@1; BM25 plus grep retrieval; 200-step capOpen source (opens in a new tab)
AA-LCRReasoning74.0Artificial Analysis independent run; 100 roughly 100k-token multi-document questions; 3 repeats; equality-checker pass@1; no toolsOpen source (opens in a new tab)
Humanity's Last ExamReasoning37.2Artificial Analysis independent run; 2,158 text-only questions; pass@1; GPT-4o (August 2024) equality checker; no toolsOpen source (opens in a new tab)
GPQA DiamondReasoning91.1Artificial Analysis independent run; 198 questions; 5 repeats; regex-graded pass@1; no toolsOpen source (opens in a new tab)
SciCodeCoding52.6Artificial Analysis independent run; 288 test subproblems; scientist background included; 3 repeats; subproblem pass@1Open source (opens in a new tab)
IFBenchReasoning—Not measured in this datasetNo source
CritPtMath20.6Artificial Analysis independent run; 70 test challenges; 5 repeats; two-step answer parsing; official CritPt grader; pass@1; no toolsOpen source (opens in a new tab)