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DeepSeek v4: the most expected open-source model ever released, and the quietest landing

calendar_today May 22, 2026 person Zach Mueller domain lambda

After 15 months of incremental updates, leaks, and rumored leaks, DeepSeek released version 4. It arrived without the fanfare R1 and R1-preview commanded in early 2025. That quiet reception is the most interesting thing about the release.

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