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GPT-5.6 Terra

OpenAI·Operational·Released 2026-07-09textvision
Context1,050k
Max output128k
Input / 1M$2 ↗
Output / 1M$12 ↗
Cached in$0.2
Benchmarks8

Benchmarks

Cited public sources · rank is exact-benchmark, apples-to-apples

FrontierMath Tier 4 v2 (Epoch AI run)#7/4470.7% ↗
FrontierMath Tiers 1-3 v2 (Epoch AI run)#5/5986% ↗
GPQA Diamond (Epoch AI run)#11/7793.3% ↗
OTIS Mock AIME 2024-2025 (Epoch AI run)#4/7699.7% ↗
SimpleQA Verified (Epoch AI run)#27/5343.2% ↗
DeepSWE v1.1#4/1369.6% ↗
GPQA Diamond#10/7092.9% ↗
SWE-Bench Pro#5/1563.4% ↗

Compare

vs GPT-6 Astravs GPT-5.6 Solvs GPT-5.6 Lunavs Claude Fable 5.1vs Claude Opus 5vs Claude Sonnet 5vs Claude Haiku 4.5vs Gemini 3.8 Flash

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GPT-6 AstraGPT-5.6 SolGPT-5.6 LunaGPT-5.5GPT-5.5 ProGPT-5.4

Access GPT-5.6 Terra and every other model through one endpoint with automatic failover: Respan gateway.