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Claude Fable 5 vs Claude Opus 4.6

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Claude Fable 5Claude Opus 4.6
AttributeClaude Fable 5Anthropic · 42 in the newsClaude Opus 4.6Anthropic · 1 in the news
Scores
Intelligence (ECI)162155
Coding9987
Math9577
Reasoning & Knowledge9674
Agentic & Tools9877
Specifications
DeveloperAnthropicAnthropic
FamilyClaudeClaude
ReleasedJun 9, 2026Feb 5, 2026
Parameters
AvailabilityAPI accessAPI access
Context window1M1M
Price — $/M input$10.00$5.00
Price — $/M output$50.00$25.00
Inputstext, image, filetext, image, file
Outputstexttext
Benchmarks
AIME 2024/2025100%94%
APEX45%32%
GPQA Diamond93%91%
Humanity's Last Exam53%34%
SciCode60%52%
SimpleBench82%68%
SimpleQA Verified68%46%
WebDev Arena16541556
WeirdML92%78%
τ²-bench99%92%
ARC-AGI94%
ARC-AGI-269%
FrontierMath41%
FrontierMath Tier 423%
GSO (code optimization)41%
METR task horizon12.0 h
SWE-bench Verified79%
Terminal-Bench80%

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.