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

Gemini 1.5 Flash vs Grok 4.20 Beta

Google
Gemini 1.5 Flash
xAI
Grok 4.20 Beta
Overview
CompanyGooglexAI
Release dateMay 14 2024Feb 17 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapGemini 1.5 Flash shipped 644 days before Grok 4.20 Beta

Which is better: Gemini 1.5 Flash or Grok 4.20 Beta?

Gemini 1.5 Flash and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash shipped 644 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 — Gemini 1.5 Flash and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Gemini 1.5 Flash released?
Gemini 1.5 Flash was released by Google on May 14 2024.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.

Other comparisons