GPT-5.5
by OpenAI · gpt family · released 2026-04-23
On output pricing, GPT-5.5 is cheaper than 44 of the 588 priced models tracked here, at $30/Mtok. Its 1,050,000-token context window is larger than 661 of 674 models. Capabilities: vision, tools, reasoning, structured output.
Specifications
| Provider | OpenAI |
| Family | gpt |
| Input price | $5/Mtok |
| Output price | $30/Mtok |
| Cache read price | $0.5/Mtok |
| Context window | 1,050,000 |
| Max output tokens | 128,000 |
| Input modalities | text, image, pdf |
| Output modalities | text |
| Capabilities | vision, tools, reasoning, structured output |
| Knowledge cutoff | 2025-12-01 |
| Released | 2026-04-23 |
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