Grok 3 Mini Beta vs o3 Mini
Compare Grok 3 Mini Beta by xAI against o3 Mini by OpenAI, in 1 community votes, grok 3 mini beta wins 100% of head-to-head duels, context windows of 131K vs 64K, tested across 11 shared challenges. Updated March 2026.
Which is better, Grok 3 Mini Beta or o3 Mini?
Grok 3 Mini Beta is the better choice overall, winning 100% of 1 blind community votes on Rival. Grok 3 Mini Beta costs $0.4/M input tokens vs $1.1/M for o3 Mini. Context windows: 131K vs 64K tokens. Compare their real outputs side by side below.
Key Differences Between Grok 3 Mini Beta and o3 Mini
Grok 3 Mini Beta is made by xai while o3 Mini is from openai. Grok 3 Mini Beta has a 131K token context window compared to o3 Mini's 64K. On pricing, Grok 3 Mini Beta costs $0.4/M input tokens vs $1.1/M for o3 Mini. In community voting, In 1 community votes, Grok 3 Mini Beta wins 100% of head-to-head duels.
In 1 community votes, Grok 3 Mini Beta wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Grok 3 Mini BetaWinner
o3 MiniRunner-up
Pick Grok 3 Mini Beta. In 1 blind votes, Grok 3 Mini Beta wins 100% of the time. That's not luck.
Grok 3 Mini Beta is 5.5x cheaper per token — worth considering if cost matters.
Clear winner
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