GPT-5.4 mini vs GLM-4.5-Air
OpenAI GPT-5.4 mini | Z.ai GLM-4.5-Air | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Mar 17 2026 | Jul 28 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 106B |
Context window | 400k | — |
| 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. | 32% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 59.8% |
| Timeline | ||
| Release gap | GLM-4.5-Air shipped 232 days before GPT-5.4 mini | |
Which is better: GPT-5.4 mini or GLM-4.5-Air?
GPT-5.4 mini and GLM-4.5-Air don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4.5-Air shipped 232 days before GPT-5.4 mini, so benchmark comparisons should account for the intervening progress.
GPT-5.4 mini is proprietary, while GLM-4.5-Air is open weight.
Direct benchmark comparisons are unavailable — GPT-5.4 mini and GLM-4.5-Air don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5.4 mini was released by OpenAI on Mar 17 2026.
GLM-4.5-Air was released by Z.ai on Jul 28 2025.
GPT-5.4 mini is a proprietary model released by OpenAI. GLM-4.5-Air is an open weight model released by Z.ai.
Other comparisons
GPT-5.4 mini vs Claude Sonnet 5GLM-4.5-Air vs Claude Sonnet 5GPT-5.4 mini vs Gemini 3.5 FlashGLM-4.5-Air vs Gemini 3.5 FlashGPT-5.4 mini vs Muse Spark 1.1GLM-4.5-Air vs Muse Spark 1.1GPT-5.4 mini vs Grok 4.5GLM-4.5-Air vs Grok 4.5GPT-5.4 mini vs DeepSeek-V4-ProGLM-4.5-Air vs DeepSeek-V4-ProGPT-5.4 mini vs Mistral Medium 3.5GLM-4.5-Air vs Mistral Medium 3.5