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

GPT-4.1 nano vs Grok 4.1

OpenAI
GPT-4.1 nano
SpaceXAI
Grok 4.1
Overview
CompanyOpenAISpaceXAI
Release dateApr 14 2025Nov 17 2025
AccessProprietaryProprietary
Specifications
Context window
1M
Timeline
Release gapGPT-4.1 nano shipped 217 days before Grok 4.1

Which is better: GPT-4.1 nano or Grok 4.1?

GPT-4.1 nano and Grok 4.1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4.1 nano shipped 217 days before Grok 4.1, 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 — GPT-4.1 nano and Grok 4.1 don't publish scores on any of the same benchmarks.

Frequently asked questions

GPT-4.1 nano was released by OpenAI on Apr 14 2025.

Grok 4.1 was released by SpaceXAI on Nov 17 2025.

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