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

DeepSeek V3.1 vs Grok 4.20 Beta

DeepSeek
DeepSeek V3.1
xAI
Grok 4.20 Beta
Overview
CompanyDeepSeekxAI
Release dateAug 21 2025Feb 17 2026
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapDeepSeek V3.1 shipped 180 days before Grok 4.20 Beta

Which is better: DeepSeek V3.1 or Grok 4.20 Beta?

DeepSeek V3.1 and Grok 4.20 Beta don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3.1 shipped 180 days before Grok 4.20 Beta, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 is an open-source / open-weight model; Grok 4.20 Beta is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3.1 and Grok 4.20 Beta don't publish scores on any of the same benchmarks.

Frequently asked questions

When was DeepSeek V3.1 released?
DeepSeek V3.1 was released by DeepSeek on Aug 21 2025.
When was Grok 4.20 Beta released?
Grok 4.20 Beta was released by xAI on Feb 17 2026.
Is DeepSeek V3.1 or Grok 4.20 Beta open source?
DeepSeek V3.1 is an open-source / open-weight model released by DeepSeek. Grok 4.20 Beta is a proprietary model released by xAI.

Other comparisons