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Claude Fable 5 vs Muse Spark 1.2

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Claude Fable 5Muse Spark 1.2
AttributeClaude Fable 5Anthropic · 52 in the newsMuse Spark 1.2Meta AI · 1 in the news
Scores
Intelligence (ECI)163156
Coding9177
Math91—
Reasoning & Knowledge8672
Agentic & Tools9244
Specifications
DeveloperAnthropicMeta AI
FamilyClaude—
ReleasedJun 9, 2026Aug 5, 2026
Parameters——
AvailabilityAPI accessAPI access
Context window1M1M
Price — $/M input$10.00$1.25
Price — $/M output$50.00$4.25
Inputstext, image, filetext, image, video, file
Outputstexttext
Benchmarks
AIME 2024/2025100%—
APEX64%36%
ARC-AGI99%—
ARC-AGI-289%—
GPQA Diamond86%90%
GSO (code optimization)78%—
Humanity's Last Exam56%46%
SciCode61%57%
SimpleBench82%75%
SimpleQA Verified71%60%
WebDev Arena16281534
WeirdML92%60%
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.