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Gemini 2.5 Flash vs Grok‑1.5

Google Gemini 2.5 Flash vs xAI Grok‑1.5 — side-by-side specs.

Google
Gemini 2.5 Flash
xAI
Grok‑1.5
Overview
CompanyGooglexAI
Release dateApr 17 2025Mar 29 2024
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGrok‑1.5 shipped 384 days before Gemini 2.5 Flash

Which is better: Gemini 2.5 Flash or Grok‑1.5?

Gemini 2.5 Flash and Grok‑1.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Grok‑1.5 shipped 384 days before Gemini 2.5 Flash, 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 Gemini 2.5 Flash released?
Gemini 2.5 Flash was released by Google on Apr 17 2025.
When was Grok‑1.5 released?
Grok‑1.5 was released by xAI on Mar 29 2024.

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