# gpt-5.5-2026-04-23

`gpt-5.5-2026-04-23` — **openai** · CHAT

> gpt-5.5-2026-04-23 (gpt-5.5-2026-04-23) is a chat model from openai with a 1.1M-token context window; capabilities tools, vision, reasoning; input image, pdf, text; output text.

| Field | Value |
| --- | --- |
| Vendor | openai |
| Kind | CHAT |
| Context window | 1,050,000 tokens |
| Max output tokens | 128,000 tokens |
| Indicative price (US list) | $5 in / $30 out per 1M tokens (indicative US list — verify with vendor) |
| Input modalities | image, pdf, text |
| Output modalities | text |
| Capabilities | tools, vision, reasoning |
| Sources | committed, litellm, openai-api |
| Last verified | 2026-07-24 |

*Part of the [Model Catalog](https://openviglet.github.io/model-catalog/) — [openai models](https://openviglet.github.io/model-catalog/models/openai/) · [Vendor JSON](https://openviglet.github.io/model-catalog/by-vendor/openai.json) · [HTML](https://openviglet.github.io/model-catalog/models/openai/gpt-5.5-2026-04-23.html)*