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Gemini 3.1 Pro vs Grok‑1

2 vs 0 benchmarks won

Google
Gemini 3.1 Pro
xAI
Grok‑1
Overview
CompanyGooglexAI
Release dateFeb 19 2026Nov 3 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
94.3%
Software engineering
SWE-Bench Verified
80.6%
Multimodal understanding
MMMU
Timeline
Release gapGrok‑1 shipped 839 days before Gemini 3.1 Pro

Which is better: Gemini 3.1 Pro or Grok‑1?

Gemini 3.1 Pro leads Grok‑1 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Grok‑1 shipped 839 days before Gemini 3.1 Pro, so benchmark comparisons should account for the intervening progress.

Grok‑1 is an open-source / open-weight model; Gemini 3.1 Pro is proprietary.

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 Gemini 3.1 Pro released?
Gemini 3.1 Pro was released by Google on Feb 19 2026.
When was Grok‑1 released?
Grok‑1 was released by xAI on Nov 3 2023.
Is Gemini 3.1 Pro or Grok‑1 open source?
Grok‑1 is an open-source / open-weight model released by xAI. Gemini 3.1 Pro is a proprietary model released by Google.

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