GPT-6 Astra Pro
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
Specifications
| Lab | OpenAI |
|---|---|
| Context window | 1.1M tokens |
| Input price | $10.00/1M |
| Output price | $50.00/1M |
| Release | Sep 2026 |
Strengths
- Pro reasoning mode targets higher-quality complex-task responses
- 1.05M-token context supports long documents and codebases
- Supports text, image, and file inputs
Weaknesses
- Higher price than standard Astra
- Pro mode increases latency and cost
- Underlying model is not a new base architecture
Best for
- Deep research and complex analysis
- Long-horizon software engineering
- Large document and codebase work
In Depth: GPT-6 Astra Pro
Summary
GPT-6 Astra Pro is an AI model from OpenAI.
Released in Sep 2026. It takes file, image, and text input and produces text output, with a context window of 1.1M tokens. Input pricing is $10.00 per 1M tokens and output is $50.00 per 1M tokens on OpenRouter.