GPT-5.4 mini vs GLM-4.6
OpenAI GPT-5.4 mini | Z.ai GLM-4.6 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Mar 17 2026 | Sep 30 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 355B |
Context window | 400k | 200k |
| 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. | — | 68% |
| Timeline | ||
| Release gap | GLM-4.6 shipped 168 days before GPT-5.4 mini | |
Which is better: GPT-5.4 mini or GLM-4.6?
GPT-5.4 mini and GLM-4.6 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4.6 shipped 168 days before GPT-5.4 mini, so benchmark comparisons should account for the intervening progress.
Context windows are 400k (GPT-5.4 mini) vs 200k (GLM-4.6). GPT-5.4 mini is proprietary, while GLM-4.6 is open weight.
Direct benchmark comparisons are unavailable — GPT-5.4 mini and GLM-4.6 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-4.6 was released by Z.ai on Sep 30 2025.
GPT-5.4 mini has a 400k context window; GLM-4.6 has 200k.
GPT-5.4 mini is a proprietary model released by OpenAI. GLM-4.6 is an open weight model released by Z.ai.
Other comparisons
GPT-5.4 mini vs Claude Sonnet 5GLM-4.6 vs Claude Sonnet 5GPT-5.4 mini vs Gemini 3.5 FlashGLM-4.6 vs Gemini 3.5 FlashGPT-5.4 mini vs Muse Spark 1.1GLM-4.6 vs Muse Spark 1.1GPT-5.4 mini vs Grok 4.5GLM-4.6 vs Grok 4.5GPT-5.4 mini vs DeepSeek-V4-ProGLM-4.6 vs DeepSeek-V4-ProGPT-5.4 mini vs Mistral Medium 3.5GLM-4.6 vs Mistral Medium 3.5