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GPT-5.6 Sol

OpenAI·Operational·Released 2026-07-09textvision
Context1,050k
Max output128k
Input / 1M$4 ↗
Output / 1M$20 ↗
Cached in$0.4
Benchmarks8

Benchmarks

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

FrontierMath Tier 4 v2 (Epoch AI run)#3/4482.9% ↗
FrontierMath Tiers 1-3 v2 (Epoch AI run)#3/5989.1% ↗
GPQA Diamond (Epoch AI run)#9/7793.5% ↗
OTIS Mock AIME 2024-2025 (Epoch AI run)#1/76100% ↗
SimpleQA Verified (Epoch AI run)#4/5369.7% ↗
DeepSWE v1.1#3/1372.7% ↗
GPQA Diamond#3/7094.6% ↗
SWE-Bench Pro#3/1564.6% ↗

Compare

vs GPT-6 Astravs GPT-5.6 Terravs 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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Access GPT-5.6 Sol and every other model through one endpoint with automatic failover: Respan gateway.