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Claude Fable 5 vs GLM-5.1

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Claude Fable 5GLM-5.1
AttributeClaude Fable 5Anthropic · 42 in the newsGLM-5.1Z.ai (Zhipu AI) · 7 in the news
Scores
Intelligence (ECI)162151
Coding9958
Math9560
Reasoning & Knowledge9647
Agentic & Tools9894
Specifications
DeveloperAnthropicZ.ai (Zhipu AI)
FamilyClaude
ReleasedJun 9, 2026Apr 7, 2026
Parameters754B
AvailabilityAPI access
Context window1M205K
Price — $/M input$10.00$0.98
Price — $/M output$50.00$4.30
Inputstext, image, filetext
Outputstexttext
Benchmarks
AIME 2024/2025100%92%
APEX45%
GPQA Diamond93%85%
Humanity's Last Exam53%28%
SciCode60%44%
SimpleBench82%55%
SimpleQA Verified68%37%
WebDev Arena16541534
WeirdML92%57%
τ²-bench99%98%
FrontierMath33%
FrontierMath Tier 413%
SWE-bench Verified74%

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.