Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | — | 6B |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 400k | 2k |
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Nov 13 2025 | Mar 14 2023 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
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GPT-5.1-Codex-Mini 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 975 days before GPT-5.1-Codex-Mini, so benchmark comparisons should account for the intervening progress.
Context windows are 400k (GPT-5.1-Codex-Mini) vs 2k (ChatGLM-6B). GPT-5.1-Codex-Mini is closed, while ChatGLM-6B is open weight.
Direct benchmark comparisons are unavailable — GPT-5.1-Codex-Mini and ChatGLM-6B don't publish scores on any of the same benchmarks.