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GPT-6 Astra: the harness is the product

This story is from 2026-09-06. It is preserved in the archive; the latest stories are on the live feed.

GPT-6 Astra does not prove that OpenAI has reached AGI. What it does prove is that the harness can no longer be treated as plumbing. Astra scored 54.8% on ARC-AGI-3 at high reasoning in the standard harness. The same model scored 99.9% when the harness preserved its reasoning state and compacted lo…

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  1. 2026-09-06 00:08 · DEV Community — AI
    GPT-6 Astra: the harness is the product

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