Grok 4.20 0309 (Reasoning) vs Mercury 2.5

Grok 4.20 0309 (Reasoning) vs Mercury 2.5. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

SpaceXAIGrok 4.20 0309 (Reasoning)Not ranked · benchmark data missing
Intelligence
25.20
Total cost
-
InceptionMercury 2.5Off the frontier
Intelligence
12.30
Total cost
$218
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.

MetricGrok 4.20 0309 (Reasoning)Mercury 2.5Difference
Intelligence (higher is better)25.212.3−51.2% Mercury 2.5 is 51.2% less intelligent
Total AA cost (lower is better)Not reported$218.11— not comparable
End-to-end time (lower is better)Not reported4.39s— not comparable
Price per 1M tokens (in / out)$2.00 / $6.00$0.25 / $0.75
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGrok 4.20 0309 (Reasoning): what beats itMercury 2.5: what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/grok-4-20-0309/mercury-2-5 · Markdown: /api/v1/compare/grok-4-20-0309/mercury-2-5?format=md · llms.txt · agent skill