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Claude Fable 5 vs GLM-5.2

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Claude Fable 5GLM-5.2
AttributeClaude Fable 5Anthropic · 52 in the newsGLM-5.2Z.ai (Zhipu AI) · 28 in the news
Scores
Intelligence (ECI)163152
Coding9176
Math9127
Reasoning & Knowledge8648
Agentic & Tools9278
Specifications
DeveloperAnthropicZ.ai (Zhipu AI)
FamilyClaude—
ReleasedJun 9, 2026Jun 16, 2026
Parameters——
AvailabilityAPI accessOpen weights (unrestricted)
Context window1M1M
Price — $/M input$10.00$0.97
Price — $/M output$50.00$4.00
Inputstext, image, filetext
Outputstexttext
Benchmarks
AIME 2024/2025100%86%
APEX64%45%
ARC-AGI99%77%
ARC-AGI-289%23%
GPQA Diamond86%92%
GSO (code optimization)78%—
Humanity's Last Exam56%41%
SciCode61%51%
SimpleBench82%59%
SimpleQA Verified71%34%
WebDev Arena16281593
WeirdML92%70%
τ²-bench99%99%
SWE-bench Verified—79%

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.