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GLM-5.2 vs GPT-5.5
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Scores
Intelligence (ECI)—159
Coding9190
Math3397
Reasoning & Knowledge7091
Agentic & Tools—95
Specifications
DeveloperZ.ai (Zhipu AI)OpenAI
Family—GPT
ReleasedJun 16, 2026Apr 23, 2026
Parameters——
AvailabilityOpen weights (unrestricted)API access
Context window1M1.1M
Price — $/M input$0.95$5.00
Price — $/M output$3.00$30.00
Inputstextfile, image, text
Outputstexttext
Benchmarks
AIME 2024/202586%100%
GPQA Diamond92%94%
SimpleQA Verified38%63%
SWE-bench Verified79%81%
WebDev Arena15931505
WeirdML70%85%
APEX—38%
ARC-AGI—95%
ARC-AGI-2—85%
FrontierMath—52%
FrontierMath Tier 4—35%
GSO (code optimization)—40%
SimpleBench—69%
Terminal-Bench—85%
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.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.