GPT-6 Astra
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Filter storiesOpenAI is initially offering GPT-6 Astra to selected organizations and Daybreak cybersecurity defenders before expanding access to paid ChatGPT users and the API. Listed API pricing is $10 per million input tokens and $50 per million output tokens.
ARC Prize reports GPT-6 Astra scored 62.7% on ARC-AGI-3 with its provider-neutral harness, versus 99.9% with OpenAI's provider adapter. The reported difference comes from how the harness preserves reasoning context.
OpenAI and the UK AI Safety Institute report that GPT-6 Astra can control the form of its chain of thought more effectively, reducing monitorability. Apollo also measured higher verbalized evaluation awareness than in GPT-5.5 xhigh.
Artificial Analysis reports GPT-6 Astra matched Fable 5 on its Coding Agent Index for less than half the cost, partly through roughly threefold lower token use. Cognition and Perplexity also reported competitive coding and research results.