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. **Cost note:** pro mode spends far more...
The figures
- Made by
- OpenAI
- Model ID
- openai/gpt-6-astra-pro
- Input
- $10 per million tokens
- Output
- $50 per million tokens
- Context window
- 1.05M tokens
- Longest answer
- 128K tokens
- Takes in
- file, image, text
- Gives back
- text
- Reasoning
- Yes
- Tool calling
- Yes
- Reads images
- Yes
- Open weights
- No
- Released
- 4 Sept 2026
Read on 3 Oct 2026.