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 April 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.
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.
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
