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GPT-5 vs GPT-5.6 Sol

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GPT-5GPT-5.6 Sol
AttributeGPT-5OpenAI · 84 in the newsGPT-5.6 SolOpenAI · 3 in the news
Scores
Intelligence (ECI)150162
Coding4696
Math7097
Reasoning & Knowledge5696
Agentic & Tools3744
Specifications
DeveloperOpenAIOpenAI
FamilyGPTGPT
ReleasedAug 7, 2025Jul 9, 2026
Parameters
AvailabilityAPI accessAPI access
Context window400K1.1M
Price — $/M input$1.25$5.00
Price — $/M output$10.00$30.00
Inputstext, image, filefile, image, text
Outputstexttext
Benchmarks
AIME 2024/202591%100%
APEX18%
ARC-AGI66%98%
ARC-AGI-210%93%
FrontierMath32%
FrontierMath Tier 413%
GDPval (win/tie rate)38%
GPQA Diamond86%93%
GSO (code optimization)7%
Humanity's Last Exam25%47%
LiveCodeBench85%
MATH Level 598%
METR task horizon3.4 h
MMLU-Pro87%
SciCode43%56%
SimpleBench57%72%
SimpleQA Verified51%72%
SWE-bench Verified74%
Terminal-Bench50%
WebDev Arena1395
WeirdML61%89%
τ²-bench85%85%

Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.

Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.