GPT-5.5
OpenAI first-party · 1,050,000 ctx · from $5 input / $30 output per 1M tokens
- Input price ranks #419 of 447 priced models (cheaper = better).
- Cheaper alternative with ≥ same context: GPT-5.4 at $2.5 input.
| Provider | OpenAI |
|---|---|
| Family | gpt |
| Context window | 1,050,000 |
| Max output | 128,000 |
| Input price | $5 |
| Output price | $30 |
| Cache read | $0.5 |
| Cache write | — |
| Reasoning | Yes |
| Tool calling | Yes |
| Vision | Yes |
| Open weights | No |
| Knowledge cutoff | 2025-12-01 |
| Released | 2026-04-23 |
| Last updated | 2026-04-23 |
Available from 2 curated sources
| Source | Input | Output |
|---|---|---|
| OpenAI first-party | $5 | $30 |
| OpenRouter | $5 | $30 |
Identity: OpenAI; data via models.dev + OpenRouter public APIs. Always confirm on the provider's official pricing page.