OpenAI
GPT-6 Astra Pricing, Specs & Alternatives
Long context over 272K costs $20 in, $75 out. Powers Pro reasoning in ChatGPT Pro.
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Questions
How much does GPT-6 Astra cost
GPT-6 Astra lists $10 per 1M input tokens and $50 per 1M output tokens, checked Nov 9, 2026 on platform.openai.com.
When was GPT-6 Astra released
Sep 3, 2026, per developers.openai.com.
What is the GPT-6 Astra context window
1,050,000 tokens, per developers.openai.com, read Nov 9, 2026.
Who makes GPT-6 Astra
OpenAI.
What are alternatives to GPT-6 Astra
Claude Fable 5.1, Claude Fable 5.2, Claude Fable 5, Claude Mythos 5.1, Claude Mythos 5.2.
Head to head
All comparisons- GPT-6 Astra vs Claude Opus 5.5: GPT-6 Astra $10 / $50 vs Claude Opus 5.5 $4 / $20 per 1M tokens in / out.
- Gemini 4 Argon vs GPT-6 Astra: GPT-6 Astra $10 / $50 vs Gemini 4 Argon $2 / $10 per 1M tokens in / out.
- Claude Fable 5.1 vs GPT-6 Astra: GPT-6 Astra $10 / $50 vs Claude Fable 5.1 $10 / $50 per 1M tokens in / out.