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Selection Guides

Model comparisons, scenario notes, and index usage—structured for search and citation.

DeepSeek V4 Guide 2026: V4-Pro vs V4-Flash vs R1

DeepSeek-V4-Pro is the reasoning flagship on this index: 1.6T total parameters, about 49B active, 1M context, 384K max output. V4-Flash is the smaller, faster 284B / 13B-active twin with the same context. R1 is the separate chain-of-thought model.

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