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

Kimi-Dev vs GPT-4.1 nano

Moonshot AI
Kimi-Dev
OpenAI
GPT-4.1 nano
Overview
CompanyMoonshot AIOpenAI
Release dateJun 2025Apr 14 2025
AccessOpen WeightProprietary
Specifications
Parameters
72B
Context window
1M
Timeline
Release gapGPT-4.1 nano shipped 48 days before Kimi-Dev

Which is better: Kimi-Dev or GPT-4.1 nano?

Kimi-Dev 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 48 days before Kimi-Dev, so benchmark comparisons should account for the intervening progress.

Kimi-Dev is open weight, while GPT-4.1 nano is proprietary.

Direct benchmark comparisons are unavailable — Kimi-Dev and GPT-4.1 nano don't publish scores on any of the same benchmarks.

Frequently asked questions

Kimi-Dev was released by Moonshot AI on Jun 2025.

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

Kimi-Dev is an open weight model released by Moonshot AI. GPT-4.1 nano is a proprietary model released by OpenAI.

Other comparisons