AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Gemini 3.1 Flash vs Grok 4.5

Google
Gemini 3.1 Flash
SpaceXAI
Grok 4.5
Overview
CompanyGoogleSpaceXAI
Release dateFeb 26 2026Jul 8 2026
AccessProprietaryProprietary
Benchmarks
Agentic coding
SWE-Bench Pro
64.7%
Multilingual coding
SWE-Bench Multilingual
78%
Agentic coding
DeepSWE 1.0
62%
Agentic terminal coding
Terminal-Bench 2.1
83.3%
Timeline
Release gapGemini 3.1 Flash shipped 132 days before Grok 4.5

Which is better: Gemini 3.1 Flash or Grok 4.5?

Gemini 3.1 Flash and Grok 4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 3.1 Flash shipped 132 days before Grok 4.5, 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 — Gemini 3.1 Flash and Grok 4.5 don't publish scores on any of the same benchmarks.

Frequently asked questions

Gemini 3.1 Flash was released by Google on Feb 26 2026.

Grok 4.5 was released by SpaceXAI on Jul 8 2026.

Other comparisons