▸ compare
Z.ai: GLM 5 vs OpenAI: GPT-5.1
Side-by-side benchmark comparison based on independent public data. Scores, pricing, context, and task breakdown.
▸ verdict
Z.ai: GLM 5
86.2
higher score
vs
OpenAI: GPT-5.1
81.2
Z.ai: GLM 5 leads with a higher composite benchmark score. It's the stronger choice for general-purpose tasks based on public benchmark data.
▸ score breakdown
| Task | Z.ai: GLM 5 | OpenAI: GPT-5.1 | Δ |
|---|---|---|---|
| Overall | 86.2 | 81.2 | +5.0 |
| Coding | 64.8 | 61.1 | +3.7 |
| Reasoning | — | 68.3 | — |
| Math | — | 84.1 | — |
| Writing | — | 80.1 | — |
| JSON | — | — | — |
▸ specs & pricing
| Attribute | Z.ai: GLM 5 | OpenAI: GPT-5.1 |
|---|---|---|
| Provider | Z Ai | Openai |
| Context window | 203K | 400K |
| Input $/M tokens | $0.60/M | $1.25/M |
| Output $/M tokens | $1.92/M | $10.00/M |
| Weights | proprietary | proprietary |
▸ frequently asked
Is Z.ai: GLM 5 better than OpenAI: GPT-5.1?
Z.ai: GLM 5 scores higher overall (86.2 vs 81.2) in the benchmark composite. The best choice depends on the specific use case and budget.
Which is cheaper: Z.ai: GLM 5 or OpenAI: GPT-5.1?
Z.ai: GLM 5 is cheaper at $0.6/M input tokens vs $1.25/M for OpenAI: GPT-5.1.
Which model is better for coding?
Z.ai: GLM 5 leads on coding with a score of 64.8 vs 61.1 for OpenAI: GPT-5.1. This is based on SWE-Bench, Aider Polyglot, and LiveCodeBench data.