// openai flagship
GPT-6 Astra
GPT-6 Astra is OpenAI's flagship model released on September 3, 2026. It offers a 1,050,000 token context window and is designed for applications requiring extensive context handling.
Pricing
| model | input / 1M | output / 1M | context |
|---|---|---|---|
| GPT-6 Astra | $10 | $50 | 1,050,000 |
Rates come from the OpenRouter price list and are checked daily (prices updated 2026-11-11)
Comparison with other models
| model | input / 1M | output / 1M | context |
|---|---|---|---|
| GPT-6 Astra | $10 | $50 | 1,050,000 |
| Claude Fable 5.1 | $10 | $50 | 1,000,000 |
| Claude Opus 5 | $5 | $25 | 1,000,000 |
| Kimi K3 | $0.192 | $16 | 1,048,576 |
| Grok 4.6 | $2 | $6 | 500,000 |
Among the models in this comparison, Grok 4.6 has the lowest output price at $6 per million tokens, while GPT-6 Astra and Claude Fable 5.1 are the most expensive at $50 per million output tokens.
Articles about GPT-6 Astra
- Claude Fable 5.2 vs GPT-6 Astra and Gemini 4 Carbon 2026-11-10
- Claude Opus 5.5 vs GPT-6 Astra: Plan or API? 2026-11-07
- AI Cybersecurity in 2026: From Mythos to GPT-6 Cyber 2026-11-05
- GPT-6 Cyber: Specs, Benchmarks, Pricing and Access 2026-11-05
- GPT-6 Cyber Pricing: API Costs and Exploit Economics 2026-11-05
- GPT-6 Cyber vs Claude Mythos vs Gemini 4 Carbon: Closed Models 2026-11-05
- The Honeypot Test: Does GPT-6 Cyber Stay in Scope? 2026-11-05
- GPT-6 Cyber Found 81 Flaws in Firefox: Checking Mozilla Advisory 2026-11-05
- GPT-6 Cyber Benchmarks: What the System Card Really Measures 2026-11-05
- How to Get GPT-6 Cyber Access: Daybreak Red and Blue Guide 2026-11-05
- 948 Linux Kernel Exploits: How GPT-6 Cyber Did It for $1.2M 2026-11-05
- ChatGPT Plus vs. OpenAI API: How Much Can $20 Buy? 2026-11-04
Frequently asked questions
- How much does GPT-6 Astra cost?
- GPT-6 Astra costs $10 per million input tokens and $50 per million output tokens. These rates are twice as high as Claude Opus 5 for both input and output.
- What is the context window size?
- GPT-6 Astra has a context window of 1,050,000 tokens. This is the largest context window among the models in this comparison.
- How does GPT-6 Astra compare to Claude Opus 5?
- GPT-6 Astra costs twice as much as Claude Opus 5, which is priced at $5 per million input tokens and $25 per million output tokens. Both models offer 1,000,000 token context windows, though GPT-6 Astra provides 50,000 additional tokens.
- When was GPT-6 Astra released?
- GPT-6 Astra was released on September 3, 2026. OpenAI is rolling out the model in stages.
- What does RSI mean in relation to this model?
- OpenAI uses the acronym RSI, which stands for Recursive Self-Improvement, as a new internal definition of AGI. This terminology is associated with the development approach behind GPT-6 Astra.