Grok 3 Mini Beta vs OpenAI o3
Compare Grok 3 Mini Beta by xAI against OpenAI o3 by OpenAI, tested across 13 shared challenges. Updated May 2026.
Which is better, Grok 3 Mini Beta or OpenAI o3?
Grok 3 Mini Beta and OpenAI o3 are both competitive models. Grok 3 Mini Beta costs $0.4/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Grok 3 Mini Beta and OpenAI o3
Grok 3 Mini Beta is made by xai while OpenAI o3 is from openai. On pricing, Grok 3 Mini Beta costs $0.4/M input tokens vs $10/M for OpenAI o3.
API pricing
Per 1M tokens
Grok 3 Mini Beta
Input
$0.40
25× cheaper
Output
$0.80
50× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Grok 3 Mini Beta is cheaper on both — 25× input, 50× output
Our Verdict
OpenAI o3
Grok 3 Mini BetaRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier.
Grok 3 Mini Beta is 50x cheaper per token — worth considering if cost matters.
Too close to call
FAQ
