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

Kimi K2.7 Code vs o3

Moonshot AI
Kimi K2.7 Code
OpenAI
o3
Overview
CompanyMoonshot AIOpenAI
Release dateJun 12 2026Apr 16 2025
Model type
Open sourceYesNo
Specifications
Parameters
1T
Context window
256k
Benchmarks
Timeline
Release gapo3 shipped 422 days before Kimi K2.7 Code

Which is better: Kimi K2.7 Code or o3?

Kimi K2.7 Code and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o3 shipped 422 days before Kimi K2.7 Code, so benchmark comparisons should account for the intervening progress.

Kimi K2.7 Code is an open-source / open-weight model; o3 is proprietary.

Direct benchmark comparisons are unavailable — Kimi K2.7 Code and o3 don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Kimi K2.7 Code released?
Kimi K2.7 Code was released by Moonshot AI on Jun 12 2026.
When was o3 released?
o3 was released by OpenAI on Apr 16 2025.
Is Kimi K2.7 Code or o3 open source?
Kimi K2.7 Code is an open-source / open-weight model released by Moonshot AI. o3 is a proprietary model released by OpenAI.

Other comparisons