GPT-5.5 Pro vs Kimi K3
30-second takeaway
- Kimi K3 has the cheaper input: $3 vs $30 (per 1M tokens, 90% less)
- GPT-5.5 Pro has the larger context: 1.05M vs 1.049M tokens
| GPT-5.5 Pro OpenAI | Kimi K3 Alibaba | |
|---|---|---|
| Input | $30 | $3 |
| Output | $180 | $15 |
| Context | 1.05M | 1.049M |
More specs (max output / capabilities)
| max output | 128,000 | 1,048,576 |
| 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.