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Claude Fable 5 vs Fugu Ultra
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Scores
Intelligence (ECI)161—
Coding100—
Math97—
Reasoning & Knowledge97—
Agentic & Tools97—
Specifications
DeveloperAnthropicSakana
FamilyClaude—
ReleasedJun 9, 2026Jun 24, 2026
Parameters——
AvailabilityAPI access—
Context window1M1M
Price — $/M input$10.00$5.00
Price — $/M output$50.00$30.00
Inputstext, image, filetext, image
Outputstexttext
Benchmarks
AIME 2024/2025100%—
APEX45%—
GPQA Diamond93%—
Humanity's Last Exam53%—
SciCode60%—
SimpleBench82%—
SimpleQA Verified68%—
WebDev Arena1654—
WeirdML88%—
τ²-bench99%—
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.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.