OpenAI

GPT-5.6 Sol

Jul 9, 2026ReasoningClosed weights

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Intelligence

42.3

#49 of 744Rank 49 of 744 measured models

Coding

77.2

#7 of 298Rank 7 of 298 measured models

Output speed

81 t/s

#228 of 403Rank 228 of 403 measured models

Price/1M

$8

#603 of 659Rank 603 of 659 measured models

Context window

1M

#84 of 1199Rank 84 of 1199 measured models

Cost per task

$0.808

#119 of 193Rank 119 of 193 measured models

GPT-5.6 Sol (High) scores 42.3 on the Artificial Analysis Intelligence Index, ranking 49th of 744 measured models. The closest models on this index are GPT-5.6 Terra (42.1), Claude Opus 4.8 (batch) (41.8), and GLM-5.3-Flash (41.8). At $8 per million tokens (3:1 input/output blended price), it is more expensive than GPT-5.6 Terra ($4.50) and GLM-5.3-Flash ($0.237). With an output speed of 81 t/s, it is faster than GLM-5.3-Flash (61.1 t/s), slower than GPT-5.6 Terra (107 t/s).