GPT-5.6 Sol
by OpenAI · ID gpt-5-6-sol · Released 2026-07 · Proprietary
1485
ELO Score
-
MMLU
-
HumanEval
1.05M
Context Window
$4.00
Input Price
About GPT-5.6 Sol
Flagship tier of the GPT-5.6 family (July 9, 2026). Scores 94.6% on GPQA Diamond, 90.4% on BrowseComp and 89% on FrontierMath Tier 1-3. Price cut on 21 August 2026 from $5/$30 to $4/$20, a promotional rate that runs through at least 21 November 2026. 922K input / 128K output; requests above 272K input tokens are billed at 2x input and 1.5x output. Arena text score 1485 (GPT-5.6 Sol (xHigh), 43,796 votes), leaderboard of 27 October 2026.
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