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

Kimi Linear vs o1-pro

Moonshot AI
Kimi Linear
OpenAI
o1-pro
Overview
CompanyMoonshot AIOpenAI
Release dateOct 2025Mar 19 2025
AccessOpen WeightProprietary
Specifications
Parameters
48B
Timeline
Release gapo1-pro shipped 196 days before Kimi Linear

Which is better: Kimi Linear or o1-pro?

Kimi Linear and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-pro shipped 196 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.

Kimi Linear is open weight, while o1-pro is proprietary.

Direct benchmark comparisons are unavailable — Kimi Linear and o1-pro don't publish scores on any of the same benchmarks.

Frequently asked questions

Kimi Linear was released by Moonshot AI on Oct 2025.

o1-pro was released by OpenAI on Mar 19 2025.

Kimi Linear is an open weight model released by Moonshot AI. o1-pro is a proprietary model released by OpenAI.

Other comparisons