Kimi K1.5 vs GPT-4.1 nano
Moonshot AI Kimi K1.5 | OpenAI GPT-4.1 nano | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jan 20 2025 | Apr 14 2025 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | 128k | 1M |
| Timeline | ||
| Release gap | Kimi K1.5 shipped 84 days before GPT-4.1 nano | |
Which is better: Kimi K1.5 or GPT-4.1 nano?
Kimi K1.5 and GPT-4.1 nano don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi K1.5 shipped 84 days before GPT-4.1 nano, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (Kimi K1.5) vs 1M (GPT-4.1 nano).
Direct benchmark comparisons are unavailable — Kimi K1.5 and GPT-4.1 nano 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.
GPT-4.1 nano was released by OpenAI on Apr 14 2025.
Kimi K1.5 has a 128k context window; GPT-4.1 nano has 1M.
Other comparisons
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