GPT-5.3-Codex vs ChatGLM-6B
OpenAI GPT-5.3-Codex | Z.ai ChatGLM-6B | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Feb 5 2026 | Mar 14 2023 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 6B |
| 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. | 24% | — |
| Timeline | ||
| Release gap | ChatGLM-6B shipped 1059 days before GPT-5.3-Codex | |
Which is better: GPT-5.3-Codex or ChatGLM-6B?
GPT-5.3-Codex and ChatGLM-6B don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. ChatGLM-6B shipped 1059 days before GPT-5.3-Codex, so benchmark comparisons should account for the intervening progress.
GPT-5.3-Codex is proprietary, while ChatGLM-6B is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex and ChatGLM-6B don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5.3-Codex was released by OpenAI on Feb 5 2026.
ChatGLM-6B was released by Z.ai on Mar 14 2023.
GPT-5.3-Codex is a proprietary model released by OpenAI. ChatGLM-6B is an open weight model released by Z.ai.
Other comparisons
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