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Claude Fable 5 vs Perceptron Mk1

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Claude Fable 5Perceptron Mk1
Claude Fable 5Anthropic · 18 in the newsPerceptron Mk1Perceptron
Scores
Intelligence (ECI)161
Coding100
Math97
Reasoning & Knowledge97
Agentic & Tools97
Specifications
DeveloperAnthropicPerceptron
FamilyClaude
ReleasedJun 9, 2026May 12, 2026
Parameters
AvailabilityAPI access
Context window1M33K
Price — $/M input$10.00$0.15
Price — $/M output$50.00$1.50
Inputstext, image, filetext, image, video
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.

Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.