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Claude Fable 5 vs GPT-5.2 Pro

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Claude Fable 5GPT-5.2 Pro
AttributeClaude Fable 5Anthropic · 42 in the newsGPT-5.2 ProOpenAI
Scores
Intelligence (ECI)162155
Coding99
Math9592
Reasoning & Knowledge9657
Agentic & Tools98
Specifications
DeveloperAnthropicOpenAI
FamilyClaudeGPT
ReleasedJun 9, 2026Dec 11, 2025
Parameters
AvailabilityAPI accessAPI access
Context window1M400K
Price — $/M input$10.00$21.00
Price — $/M output$50.00$168.00
Inputstext, image, fileimage, text, file
Outputstexttext
Benchmarks
AIME 2024/2025100%
APEX45%
GPQA Diamond93%
Humanity's Last Exam53%
SciCode60%
SimpleBench82%57%
SimpleQA Verified68%
WebDev Arena1654
WeirdML92%
τ²-bench99%
ARC-AGI91%
ARC-AGI-254%
FrontierMath Tier 431%

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.