GPT-6 Astra (High) vs Grok 4.20 0309 v2 (Reasoning)

GPT-6 Astra (High) vs Grok 4.20 0309 v2 (Reasoning). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-6 Astra (High)Off the frontier
Intelligence
50.90
Total cost
$2925
SpaceXAIGrok 4.20 0309 v2 (Reasoning)Not ranked · benchmark data missing
Intelligence
25.70
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.

MetricGPT-6 Astra (High)Grok 4.20 0309 v2 (Reasoning)Difference
Intelligence (higher is better)50.925.7−49.5% Grok 4.20 0309 v2 (Re… is 49.5% less intelligent
Total AA cost (lower is better)$2,925.01Not reported— not comparable
End-to-end time (lower is better)45.44s18.86s−58.5% Grok 4.20 0309 v2 (Re… is 58.5% faster
Price per 1M tokens (in / out)$10.0 / $50.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-6 Astra (High): what beats itGrok 4.20 0309 v2 (Reasoning): what beats it
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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-6-astra-high/grok-4-20 · Markdown: /api/v1/compare/gpt-6-astra-high/grok-4-20?format=md · llms.txt · agent skill