Grok 3 Mini Beta vs o3 Mini
Compare Grok 3 Mini Beta by xAI against o3 Mini by OpenAI, context windows of 131K vs 64K, tested across 13 shared challenges. Updated May 2026.
Which is better, Grok 3 Mini Beta or o3 Mini?
Grok 3 Mini Beta and o3 Mini are both competitive models. 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.
Per 1M tokens
Grok 3 Mini Beta is cheaper on both — 2.8× input, 5.5× output
No community votes yet. On paper, Grok 3 Mini Beta has the edge — newer, bigger context window.
Grok 3 Mini Beta is 5.5x cheaper per token — worth considering if cost matters.
