Moonshot AI Kimi K2.7 Code | OpenAI GPT-5-Codex | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jun 12 2026 | Sep 15 2025 |
| Model type | — | — |
| Open source | Yes | No |
| Specifications | ||
Parameters | 1T | — |
Context window | 256k | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | GPT-5-Codex shipped 270 days before Kimi K2.7 Code | |
Kimi K2.7 Code and GPT-5-Codex don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5-Codex shipped 270 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; GPT-5-Codex is proprietary.
Direct benchmark comparisons are unavailable — Kimi K2.7 Code and GPT-5-Codex don't publish scores on any of the same benchmarks.