GPT-5.1 Codex (High) vs K2-V2 (High)

GPT-5.1 Codex (High) vs K2-V2 (High). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.1 Codex (High)Not ranked · benchmark data missing
Intelligence
23.70
Total cost
-
Institute of Foundation ModelsK2-V2 (High)Not ranked · benchmark data missing
Intelligence
9.90
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.

MetricGPT-5.1 Codex (High)K2-V2 (High)Difference
Intelligence (higher is better)23.79.9−58.2% K2-V2 (High) is 58.2% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)12.01sNot reported— not comparable
Price per 1M tokens (in / out)$1.25 / $10.0—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.1 Codex (High): what beats itK2-V2 (High): what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-1-codex/k2-v2 · Markdown: /api/v1/compare/gpt-5-1-codex/k2-v2?format=md · llms.txt · agent skill