Best Input Price
$10.00 / 1M
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
Context Window
1,050,000 tokens
Reasoning
Supported
Tool Calling
Supported
Released
2026-09-04
Inference Providers (3)
| Provider | Model ID | Context | Input / 1M | Output / 1M | Action |
|---|---|---|---|---|---|
| NanoGPT | openai/gpt-6-astra-pro | 1,050,000 | $10.00 | $50.00 | Docs ↗ |
| Kilo Gateway | openai/gpt-6-astra-pro | 1,050,000 | $10.00 | $50.00 | Docs ↗ |
| OpenRouter | openai/gpt-6-astra-pro | 1,050,000 | $10.00 | $50.00 | Docs ↗ |