GLM-5.1 (Reasoning) vs GPT-5.5 (Low)

GLM-5.1 (Reasoning) vs GPT-5.5 (Low). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

Z AIGLM-5.1 (Reasoning)Off the frontier
Intelligence
26.10
Total cost
$1487
OpenAIGPT-5.5 (Low)Not ranked · benchmark data missing
Intelligence
30.70
Total cost
-
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricGLM-5.1 (Reasoning)GPT-5.5 (Low)Difference
Intelligence (higher is better)26.130.7+17.6% GPT-5.5 (Low) is 17.6% more intelligent
Total AA cost (lower is better)$1,486.78Not reported— not comparable
End-to-end time (lower is better)64.38s8.12s−87.4% GPT-5.5 (Low) is 87.4% faster
Price per 1M tokens (in / out)$1.28 / $4.07$5.00 / $30.0
Input modalitiesTextText, Image
Open this matchup in the interactive pickerGLM-5.1 (Reasoning): what beats itGPT-5.5 (Low): what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/glm-5-1/gpt-5-5-low · Markdown: /api/v1/compare/glm-5-1/gpt-5-5-low?format=md · llms.txt · agent skill