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GPT-6 Astra Arrives, Priced to Match Fable 5.1's $10/$50 per Mtok

2026-09-05 ยท source:

GPT-6 Astra is OpenAI's new model rolling out to ChatGPT tiers and the API, priced at $10 per million input and $50 per million output tokens, matching Claude Fable 5 and 5.1.

What it is

GPT-6 Astra, a new OpenAI model announced via OpenAI's own post and covered by Simon Willison.

What it does

Rolls out first to a limited set of organizations, then to all ChatGPT Plus, Pro, Business, and Enterprise users plus the OpenAI API and AWS over the following days. It's priced identically to Claude Fable 5 and 5.1 at $10/million input and $50/million output tokens, and OpenAI claims it scores higher than Fable on most benchmarks, though Simon Willison notes he hadn't tried it himself yet at time of writing.

Why it matters

Matching Fable's exact price point instead of undercutting it is a deliberate signal: OpenAI is positioning Astra as a head-to-head substitute rather than a budget alternative, which only makes sense if the benchmark claims hold up under independent testing.

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