Kimi-Dev vs GPT-5.4 nano
Moonshot AI Kimi-Dev | OpenAI GPT-5.4 nano | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jun 2025 | Mar 17 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Parameters | 72B | — |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 14% |
| Timeline | ||
| Release gap | Kimi-Dev shipped 289 days before GPT-5.4 nano | |
Which is better: Kimi-Dev or GPT-5.4 nano?
Kimi-Dev and GPT-5.4 nano don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi-Dev shipped 289 days before GPT-5.4 nano, so benchmark comparisons should account for the intervening progress.
Kimi-Dev is open weight, while GPT-5.4 nano is proprietary.
Direct benchmark comparisons are unavailable — Kimi-Dev and GPT-5.4 nano don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi-Dev was released by Moonshot AI on Jun 2025.
GPT-5.4 nano was released by OpenAI on Mar 17 2026.
Kimi-Dev is an open weight model released by Moonshot AI. GPT-5.4 nano is a proprietary model released by OpenAI.
Other comparisons
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