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#移行ガイド articles

1 articles

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Sonnet 4.5's 1M Token Beta Ends | Complete Migration Guide to Sonnet 4.6

What was deprecated is the Sonnet 4.5 beta header (context-1m-2025-08-07), not Sonnet 4.6 itself — Sonnet 4.6 ships with 1M token support as a standard feature. Migration requires just two changes: updating the model ID and removing the header, completable in a few lines.