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Claude Fable 5 vs GLM-4.5

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Claude Fable 5glm-4-5
AttributeClaude Fable 5Anthropic · 52 in the newsGLM-4.5Z.ai (Zhipu AI),Tsinghua University · 9 in the news
Scores
Intelligence (ECI)163—
Coding9119
Math9113
Reasoning & Knowledge8618
Agentic & Tools928
Specifications
DeveloperAnthropicZ.ai (Zhipu AI),Tsinghua University
FamilyClaude—
ReleasedJun 9, 2026Aug 5, 2025
Parameters—355B
AvailabilityAPI accessOpen weights (unrestricted)
Context window1M131K
Price — $/M input$10.00$0.60
Price — $/M output$50.00$2.20
Inputstext, image, filetext
Outputstexttext
Benchmarks
AIME 2024/2025100%74%
APEX64%—
ARC-AGI99%—
ARC-AGI-289%—
GPQA Diamond86%78%
GSO (code optimization)78%—
Humanity's Last Exam56%8%
SciCode61%35%
SimpleBench82%—
SimpleQA Verified71%—
WebDev Arena1628—
WeirdML92%41%
τ²-bench99%43%
LiveCodeBench—74%
MMLU-Pro—84%

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.