# GPT-6 Astra

GPT-6 Astra is an OpenAI language model released Sep 3, 2026; OpenAI's newest language model in our dataset is GPT-6.1 Terra. Proprietary, API access only. OpenAI's flagship GPT-6 model for complex reasoning and coding, and its most expensive text model per token. Verified against vendor sources on Oct 26, 2026.

Last verified: 2026-10-26 · Evidence: Reported · Canonical: https://theagenticweekly.com/models/gpt-6-astra · JSON: https://theagenticweekly.com/api/models/gpt-6-astra

## Key facts

| Fact | Value | Source |
|---|---|---|
| Vendor | OpenAI |  |
| Released | Sep 3, 2026 | https://openai.com/index/gpt-6-astra/ |
| API id | `gpt-6-astra` | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Context window | 1,050,000 tokens (1.05M) | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Max output | 128,000 tokens | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Input | text, image | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Output | text | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Licence | Proprietary (API) | https://developers.openai.com/api/docs/models/gpt-6-astra |
| Pricing | $10 in / $50 out per 1M tokens. Prompts above 272K input tokens cost 2x input and 1.5x output. | https://developers.openai.com/api/docs/models/gpt-6-astra |

## Vendor claims and neutral signals

- OpenAI's models page calls it the "flagship for complex reasoning and coding".

## Notes

- Knowledge cutoff listed by OpenAI: Apr 30, 2026.

## What we tested

Nothing yet. We have not run GPT-6 Astra ourselves, so every fact here is Reported from the sources below.

## Sources

- [OpenAI model page](https://developers.openai.com/api/docs/models/gpt-6-astra)
- [OpenAI announcement](https://openai.com/index/gpt-6-astra/)
- [OpenAI models list](https://developers.openai.com/api/docs/models)

Data licence: CC BY 4.0. Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0.