Kimi K1.5 vs o3-pro
Moonshot AI Kimi K1.5 | OpenAI o3-pro | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jan 20 2025 | Jun 10 2025 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | 128k | — |
| Timeline | ||
| Release gap | Kimi K1.5 shipped 141 days before o3-pro | |
Which is better: Kimi K1.5 or o3-pro?
Kimi K1.5 and o3-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi K1.5 shipped 141 days before o3-pro, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Kimi K1.5 and o3-pro don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi K1.5 was released by Moonshot AI on Jan 20 2025.
o3-pro was released by OpenAI on Jun 10 2025.
Other comparisons
Kimi K1.5 vs Claude Sonnet 5o3-pro vs Claude Sonnet 5Kimi K1.5 vs Gemini Omnio3-pro vs Gemini OmniKimi K1.5 vs Muse Spark 1.1o3-pro vs Muse Spark 1.1Kimi K1.5 vs Grok 4.5o3-pro vs Grok 4.5Kimi K1.5 vs DeepSeek-V4-Proo3-pro vs DeepSeek-V4-ProKimi K1.5 vs Mistral Medium 3.5o3-pro vs Mistral Medium 3.5