Grok 3 Beta vs OpenAI o3

Compare Grok 3 Beta by xAI against OpenAI o3 by OpenAI, tested across 43 shared challenges. Updated March 2026.

Which is better, Grok 3 Beta or OpenAI o3?

Grok 3 Beta and OpenAI o3 are both competitive models. Grok 3 Beta costs $2/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.

Key Differences Between Grok 3 Beta and OpenAI o3

Grok 3 Beta is made by xai while OpenAI o3 is from openai. On pricing, Grok 3 Beta costs $2/M input tokens vs $10/M for OpenAI o3.

Our Verdict
Grok 3 Beta
Grok 3 Beta
OpenAI o3
OpenAI o3

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Grok 3 Beta is 10x cheaper per token — worth considering if cost matters.

Too close to call
vs

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