GPT-6 Astra
The most demanding reasoning, research, and long-horizon agentic work where cost is secondary.
What are GPT-6 Astra's specs and price?
GPT-6 Astra, built by OpenAI, ships a 1.1M-token context window and a 128K-token max output, released 2026-09. It supports text and vision input with a dedicated reasoning mode and costs $20.00 per million blended tokens, the 40th-cheapest of 42 models we track.
What are GPT-6 Astra's specs?
| Context window | 1.1M tokens |
| Max output | 128K tokens |
| Modalities | text, vision |
| Extended thinking | Yes |
| Released | 2026-09 |
| Knowledge cutoff | 2026-06 |
| Provider | OpenAI |
Verified 2026-08-14 — source.
Where does GPT-6 Astra rank?
What are GPT-6 Astra's strengths?
- OpenAI's most capable GPT-6 tier for elite reasoning
- Deep reasoning mode for multi-step planning
- Native vision input and 1M+ context
What else should you know about GPT-6 Astra?
What are common questions about GPT-6 Astra?
What is GPT-6 Astra's context window?
GPT-6 Astra has a 1.1M-token context window and a 128K-token max output — the 2nd-largest context of the 42 current models we track. Source: https://platform.openai.com/docs/models, verified 2026-08-14.
Does GPT-6 Astra support vision or audio input?
Yes — GPT-6 Astra accepts vision input in addition to text.
Does GPT-6 Astra have a reasoning or extended-thinking mode?
Yes — GPT-6 Astra exposes a dedicated reasoning mode for multi-step problems.
When was GPT-6 Astra released, and what is its knowledge cutoff?
GPT-6 Astra was released 2026-09 with a knowledge cutoff of 2026-06.
How much does GPT-6 Astra cost, and who provides it?
GPT-6 Astra is served by OpenAI at $20.00/M blended tokens (3:1 input:output) — the 40th-cheapest of 42 current models. Full pricing breakdown: /llm-api-pricing/gpt-6-astra.