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GLM-5.3 vs Grok 4.6

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GLM-5.3Grok 4.6
AttributeGLM-5.3Z.ai (Zhipu AI) · 12 in the newsGrok 4.6xAI · 3 in the news
Scores
Intelligence (ECI)155156
Coding9086
Math4487
Reasoning & Knowledge6769
Agentic & Tools7991
Specifications
DeveloperZ.ai (Zhipu AI)xAI
Family—Grok
ReleasedAug 14, 2026Aug 12, 2026
Parameters744B—
AvailabilityAPI accessAPI access
Context window1M500K
Price — $/M input$0.06$2.00
Price — $/M output$2.86$6.00
Inputstexttext, image, file
Outputstexttext
Benchmarks
AIME 2024/202591%99%
APEX57%65%
GPQA Diamond91%94%
Humanity's Last Exam42%43%
SciCode59%56%
SimpleQA Verified41%49%
WebDev Arena16141618
WeirdML75%67%
ARC-AGI—88%
ARC-AGI-2—67%
SimpleBench—76%

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.