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GPT-5.4 vs GPT-5.6 Sol

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GPT-5.4GPT-5.6 Sol
AttributeGPT-5.4OpenAI · 9 in the newsGPT-5.6 SolOpenAI · 15 in the news
Scores
Intelligence (ECI)157162
Coding7795
Math8897
Reasoning & Knowledge7895
Agentic & Tools7266
Specifications
DeveloperOpenAIOpenAI
FamilyGPTGPT
ReleasedMar 5, 2026Jul 9, 2026
Parameters
AvailabilityAPI accessAPI access
Context window1.1M1.1M
Price — $/M input$2.50$5.00
Price — $/M output$15.00$30.00
Inputstext, image, filefile, image, text
Outputstexttext
Benchmarks
AIME 2024/202598%100%
APEX36%40%
ARC-AGI94%98%
ARC-AGI-274%93%
FrontierMath48%
FrontierMath Tier 427%
GPQA Diamond93%93%
GSO (code optimization)31%
Humanity's Last Exam36%47%
METR task horizon5.7 h
SciCode57%56%
SimpleQA Verified45%72%
SWE-bench Verified77%
Terminal-Bench82%
WebDev Arena14571620
WeirdML78%89%
τ²-bench87%85%
SimpleBench72%

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.