GPT-5.4 Mini vs GLM 5.3
GPT-5.4 Mini is cheaper on output tokens, while GLM 5.3 offers a larger context window. Choose GPT-5.4 Mini or GLM 5.3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.4 Mini | GLM 5.3 |
|---|---|---|
| Provider | OpenAI | Z.ai |
| Input / 1M tokens | $0.75 | $0.08 |
| Output / 1M tokens | $4.50 | $4.80 |
| Context window | 400K | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Mar 2026 | — |
| LiveBench score | 67.7 | — |
| LMArena (Chatbot Arena) Elo score | 1412 | 1471 |
| LMArena WebDev Elo score | 1398 | 1621 |
| LMArena Vision Elo score | 1245 | — |
| GPQA Diamond score | 86.9 | 90.9 |
| FrontierMath score | 28.3 | — |
| Epoch Capabilities Index score | 149 | 156 |
FAQ
Is GPT-5.4 Mini or GLM 5.3 cheaper?
GPT-5.4 Mini is cheaper on output tokens ($4.50 vs $4.80 per 1M).
Which has the larger context window, GPT-5.4 Mini or GLM 5.3?
GLM 5.3 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.