# GPT-6 Astra: AI model fact sheet

- **Provider:** openai
- **Released:** 2026-09-03
- **Context window:** 1,050,000 tokens
- **API pricing:** $10.00 / 1M input, $50.00 / 1M output
- **OpenRouter ID:** openai/gpt-6-astra
- **Capabilities:** conversation, reasoning, code-generation, analysis, agentic-tool-use, function-calling, planning

OpenAI's first GPT-6 model, out September 3 2026 from what the company calls its largest training run so far. It takes 1.05M tokens of context, writes up to 128K, and exposes five reasoning effort levels from low through max. OpenAI aims it at computer use, browsing, software engineering and long multi-step work.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gpt-6-astra