▸ compare
OpenAI: GPT-5.5 vs Z.ai: GLM 5
Side-by-side benchmark comparison based on independent public data. Scores, pricing, context, and task breakdown.
▸ verdict
OpenAI: GPT-5.5
91.1
higher score
vs
Z.ai: GLM 5
86.2
OpenAI: GPT-5.5 leads with a higher composite benchmark score. It's the stronger choice for general-purpose tasks based on public benchmark data.
▸ score breakdown
| Task | OpenAI: GPT-5.5 | Z.ai: GLM 5 | Δ |
|---|---|---|---|
| Overall | 91.1 | 86.2 | +4.9 |
| Coding | — | 64.7 | — |
| Reasoning | 78.4 | — | — |
| Math | — | — | — |
| Writing | 88.7 | — | — |
| JSON | — | — | — |
▸ specs & pricing
| Attribute | OpenAI: GPT-5.5 | Z.ai: GLM 5 |
|---|---|---|
| Provider | Openai | Z Ai |
| Context window | 1M | 203K |
| Input $/M tokens | $5.00/M | $0.60/M |
| Output $/M tokens | $30.00/M | $1.92/M |
| Weights | proprietary | proprietary |
▸ frequently asked
Is OpenAI: GPT-5.5 better than Z.ai: GLM 5?
OpenAI: GPT-5.5 scores higher overall (91.1 vs 86.2) in the benchmark composite. The best choice depends on the specific use case and budget.
Which is cheaper: OpenAI: GPT-5.5 or Z.ai: GLM 5?
Z.ai: GLM 5 is cheaper at $0.6/M input tokens vs $5/M for OpenAI: GPT-5.5.
Which model is better for coding?
Both models perform similarly on coding benchmarks (SWE-Bench, Aider Polyglot, LiveCodeBench).