# gpt-5.6-terra

`gpt-5.6-terra` — **openai** · CHAT

> gpt-5.6-terra (gpt-5.6-terra) is a chat model from openai with a 1.1M-token context window; proprietary (API-only); 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) | $2.5 in / $15 out per 1M tokens (indicative US list — verify with vendor) |
| Cited capability index | intelligence index 32.3 (cited from Artificial Analysis — verify at the source) |
| Cited speed | 112.2 tokens/s · 195.75s to first token (cited from Artificial Analysis — verify at the source) |
| Input modalities | image, pdf, text |
| Output modalities | text |
| Capabilities | tools, vision, reasoning |
| Weights | Proprietary (API-only) |
| Knowledge cutoff | 2026-02-16 |
| Release date | 2026-07-09 |
| Sources | artificial-analysis, committed, litellm, models-dev, openai-api |
| Last verified | 2026-11-05 |

*Part of the [Model Catalog](https://models.viglet.org/) — [openai models](https://models.viglet.org/models/openai/) · [Vendor JSON](https://models.viglet.org/by-vendor/openai.json) · [HTML](https://models.viglet.org/models/openai/gpt-5.6-terra.html)*