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Claude Fable 5 vs Grok 4.1

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Claude Fable 5Grok 4.1
AttributeClaude Fable 5Anthropic · 52 in the newsGrok 4.1xAI
Scores
Intelligence (ECI)163
Coding960
Math95
Reasoning & Knowledge89
Agentic & Tools9414
Specifications
DeveloperAnthropicxAI
FamilyClaudeGrok
ReleasedJun 9, 2026Nov 17, 2025
Parameters
AvailabilityAPI accessAPI access
Context window1M
Price — $/M input$10.00
Price — $/M output$50.00
Inputstext, image, file
Outputstext
Benchmarks
AIME 2024/2025100%
APEX64%13%
ARC-AGI99%
ARC-AGI-289%
GPQA Diamond86%
Humanity's Last Exam56%
SciCode61%
SimpleBench82%
SimpleQA Verified71%
WebDev Arena16281211
WeirdML92%
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.