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

DeepSeek V3.1 Terminus vs Grok Code Fast 1

DeepSeek
DeepSeek V3.1 Terminus
SpaceXAI
Grok Code Fast 1
Overview
CompanyDeepSeekSpaceXAI
Release dateSep 22 2025Aug 28 2025
AccessOpen WeightProprietary
Timeline
Release gapGrok Code Fast 1 shipped 25 days before DeepSeek V3.1 Terminus

Which is better: DeepSeek V3.1 Terminus or Grok Code Fast 1?

DeepSeek V3.1 Terminus and Grok Code Fast 1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok Code Fast 1 shipped 25 days before DeepSeek V3.1 Terminus, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 Terminus is open weight, while Grok Code Fast 1 is proprietary.

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

Frequently asked questions

DeepSeek V3.1 Terminus was released by DeepSeek on Sep 22 2025.

Grok Code Fast 1 was released by SpaceXAI on Aug 28 2025.

DeepSeek V3.1 Terminus is an open weight model released by DeepSeek. Grok Code Fast 1 is a proprietary model released by SpaceXAI.

Other comparisons