Claude Opus 5 (Low) vs K2 Horizon 0.9B

Claude Opus 5 (Low) vs K2 Horizon 0.9B. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude Opus 5 (Low)Off the frontier
Intelligence
39.40
Total cost
$1561
Institute of Foundation ModelsK2 Horizon 0.9BNot ranked · benchmark data missing
Intelligence
3.00
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.

MetricClaude Opus 5 (Low)K2 Horizon 0.9BDifference
Intelligence (higher is better)39.43.0−92.4% K2 Horizon 0.9B is 92.4% less intelligent
Total AA cost (lower is better)$1,560.91Not reported— not comparable
End-to-end time (lower is better)11.79sNot reported— not comparable
Price per 1M tokens (in / out)$5.00 / $25.0—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude Opus 5 (Low): what beats itK2 Horizon 0.9B: what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-low/k2-horizon-0-9b · Markdown: /api/v1/compare/claude-opus-5-low/k2-horizon-0-9b?format=md · llms.txt · agent skill