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GPT-6 Astra vs Step 3.7 Flash

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GPT-6 AstraStep 3.7 Flash
AttributeGPT-6 AstraOpenAI · 46 in the newsStep 3.7 FlashStepFun
Scores
Intelligence (ECI)169—
Coding9342
Math91—
Reasoning & Knowledge9824
Agentic & Tools9097
Specifications
DeveloperOpenAIStepFun
FamilyGPT—
ReleasedSep 3, 2026May 29, 2026
Parameters——
AvailabilityAPI accessOpen weights (unrestricted)
Context window1.1M262K
Price — $/M input$10.00$0.20
Price — $/M output$50.00$1.15
Inputsfile, image, texttext, image, video
Outputstexttext
Benchmarks
AIME 2024/2025100%—
APEX65%—
ARC-AGI99%—
ARC-AGI-295%—
GPQA Diamond96%81%
GSO (code optimization)79%—
Humanity's Last Exam55%21%
SciCode56%44%
SimpleQA Verified76%—
WebDev Arena1800—
WeirdML94%—
τ²-bench—99%

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.