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Claude Fable 5 vs GLM-5.3

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Claude Fable 5GLM-5.3
AttributeClaude Fable 5Anthropic · 48 in the newsGLM-5.3Z.ai (Zhipu AI) · 3 in the news
Scores
Intelligence (ECI)162
Coding9895
Math97
Reasoning & Knowledge9085
Agentic & Tools98
Specifications
DeveloperAnthropicZ.ai (Zhipu AI)
FamilyClaude
ReleasedJun 9, 2026Aug 14, 2026
Parameters744B
AvailabilityAPI accessAPI access
Context window1M1M
Price — $/M input$10.00$1.40
Price — $/M output$50.00$4.40
Inputstext, image, filetext
Outputstexttext
Benchmarks
AIME 2024/2025100%
APEX45%
ARC-AGI99%
ARC-AGI-289%
GPQA Diamond86%92%
Humanity's Last Exam56%42%
SciCode60%56%
SimpleBench82%
SimpleQA Verified68%
WebDev Arena1654
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.