GPT-6 Astra Pro
The hardest professional workflows that justify the elite Astra Pro tier.
What are GPT-6 Astra Pro's specs and price?
GPT-6 Astra Pro, 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 41st-cheapest of 42 models we track.
What are GPT-6 Astra Pro'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 Pro rank?
What are GPT-6 Astra Pro's strengths?
- Maximum-compute Astra variant via the Responses API
- Deep reasoning mode for multi-step planning
- Native vision input and 1M+ context
What else should you know about GPT-6 Astra Pro?
What are common questions about GPT-6 Astra Pro?
What is GPT-6 Astra Pro's context window?
GPT-6 Astra Pro has a 1.1M-token context window and a 128K-token max output — the 3rd-largest context of the 42 current models we track. Source: https://platform.openai.com/docs/models, verified 2026-08-14.
Does GPT-6 Astra Pro support vision or audio input?
Yes — GPT-6 Astra Pro accepts vision input in addition to text.
Does GPT-6 Astra Pro have a reasoning or extended-thinking mode?
Yes — GPT-6 Astra Pro exposes a dedicated reasoning mode for multi-step problems.
When was GPT-6 Astra Pro released, and what is its knowledge cutoff?
GPT-6 Astra Pro was released 2026-09 with a knowledge cutoff of 2026-06.
How much does GPT-6 Astra Pro cost, and who provides it?
GPT-6 Astra Pro is served by OpenAI at $20.00/M blended tokens (3:1 input:output) — the 41st-cheapest of 42 current models. Full pricing breakdown: /llm-api-pricing/gpt-6-astra-pro.