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

DeepSeek V3.1 Terminus vs GPT-4.1 nano

DeepSeek
DeepSeek V3.1 Terminus
OpenAI
GPT-4.1 nano
Overview
CompanyDeepSeekOpenAI
Release dateSep 22 2025Apr 14 2025
AccessOpen WeightProprietary
Specifications
Context window
1M
Timeline
Release gapGPT-4.1 nano shipped 161 days before DeepSeek V3.1 Terminus

Which is better: DeepSeek V3.1 Terminus or GPT-4.1 nano?

DeepSeek V3.1 Terminus and GPT-4.1 nano don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4.1 nano shipped 161 days before DeepSeek V3.1 Terminus, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 Terminus is open weight, while GPT-4.1 nano is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3.1 Terminus and GPT-4.1 nano 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.

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

DeepSeek V3.1 Terminus is an open weight model released by DeepSeek. GPT-4.1 nano is a proprietary model released by OpenAI.

Other comparisons