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A 1M context window is not a free upgrade

This story is from 2026-09-17. It is preserved in the archive; the latest stories are on the live feed.

A 1M context window sounds like a free upgrade. It is not. Cost and latency climb with every dumped file, and the soft middle of a giant window still loses the lines that matter. Dumping the whole repo into GPT-6 Astra is how you burn frontier money for a worse answer. Retrieval beats a bigger wind…

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  1. 2026-09-17 09:43 · DEV Community — AI
    A 1M context window is not a free upgrade

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