GPT-5.6 Sol (Max) vs Grok 4.20 0309 v2 (Reasoning)

GPT-5.6 Sol (Max) 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-5.6 Sol (Max)Off the frontier
Intelligence
47.00
Total cost
$3465
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-5.6 Sol (Max)Grok 4.20 0309 v2 (Reasoning)Difference
Intelligence (higher is better)47.025.7−45.3% Grok 4.20 0309 v2 (Re… is 45.3% less intelligent
Total AA cost (lower is better)$3,464.84Not reported— not comparable
End-to-end time (lower is better)105.07s21.39s−79.6% Grok 4.20 0309 v2 (Re… is 79.6% faster
Price per 1M tokens (in / out)$4.00 / $20.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.6 Sol (Max): what beats itGrok 4.20 0309 v2 (Reasoning): what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-sol/grok-4-20 · Markdown: /api/v1/compare/gpt-5-6-sol/grok-4-20?format=md · llms.txt · agent skill