OpenAI: o3 Mini vs Z.ai: GLM 4.5
Z.ai: GLM 4.5 wins on more metrics (5 of 6), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: o3 Mini | Z.ai: GLM 4.5 |
|---|---|---|
| Intelligence Index | 19.0 | 19.5✓ |
| Coding Index | — | — |
| GPQA Diamond | 75% | 78%✓ |
| Design Arena Elo | — | 1227✓ |
| Speed (tokens/sec) | — | — |
| Latency | — | — |
| Input price /M | $1.10 | $0.600✓ |
| Output price /M | $4.40 | $2.20✓ |
| Context window | 200K✓ | 131K |
| Capabilities | ReasoningToolsJSON | ReasoningToolsJSON |
Frequently asked
Is OpenAI: o3 Mini better than Z.ai: GLM 4.5?
Z.ai: GLM 4.5 wins on more metrics (5 of 6), but the right pick depends on what you optimize for — see the breakdown below.
What are the biggest differences between OpenAI: o3 Mini and Z.ai: GLM 4.5?
The table on this page compares OpenAI: o3 Mini and Z.ai: GLM 4.5 metric by metric — intelligence benchmarks, coding score, speed, latency, context window and per-token price — with the winner marked on each row. Data refreshes hourly.