# GPT-6 Astra Pro

> GPT-6 Astra Pro is a language model from OpenAI, released on 4 Sept 2026. It accepts files, images and text and generates text, with a 1.1M-token context window and up to 128K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $10 per million input tokens and $50 per million output tokens (OpenRouter), across 1 provider we track.

Source page: https://www.aimodel.directory/models/gpt-6-astra-pro
Last verified: 4 Oct 2026

## Specifications

- **Developer:** OpenAI
- **Release date:** 4 Sept 2026 (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Status:** Generally available
- **Context window:** 1.1M (1,050,000 tokens) (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Max output:** 128K tokens (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Input:** Files, images and text (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Output:** Text (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Reasoning mode:** Yes (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Tool calling:** Yes (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)
- **Structured output:** Yes (source: OpenRouter, https://openrouter.ai/openai/gpt-6-astra-pro)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $10 | $50 | $1 | 1.1M |

## FAQ

### What is the context window of GPT-6 Astra Pro?

GPT-6 Astra Pro has a context window of 1,050,000 tokens (1.1M) and can generate up to 128,000 tokens in a single response, according to OpenRouter.

### How much does the GPT-6 Astra Pro API cost?

GPT-6 Astra Pro is listed from $10 per million input tokens and $50 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.

### When was GPT-6 Astra Pro released?

OpenAI released GPT-6 Astra Pro on 4 Sept 2026, according to OpenRouter.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "GPT-6 Astra Pro", https://www.aimodel.directory/models/gpt-6-astra-pro