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o1 vs Grok 4.20 Beta

OpenAI o1 vs xAI Grok 4.20 Beta — side-by-side specs.

OpenAI
o1
xAI
Grok 4.20 Beta
Overview
CompanyOpenAIxAI
Release dateDec 5 2024Feb 17 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapo1 shipped 439 days before Grok 4.20 Beta

Which is better: o1 or Grok 4.20 Beta?

o1 and Grok 4.20 Beta do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. o1 shipped 439 days before Grok 4.20 Beta, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was o1 released?
o1 was released by OpenAI on Dec 5 2024.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.

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