GPT-5.4 mini vs GLM-5.3
30-second takeaway
- GPT-5.4 mini has the cheaper input: $0.75 vs $1.1 (per 1M tokens, 32% less)
- GLM-5.3 has the larger context: 1M vs 400K tokens
| GPT-5.4 mini OpenAI | GLM-5.3 Alibaba (China) | |
|---|---|---|
| Input | $0.75 | $1.1 |
| Output | $4.5 | $3.851 |
| Context | 400K | 1M |
More specs (max output / capabilities)
| max output | 128,000 | 131,072 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | ✓ Yes |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.