DeepSeek-V3.2
Both deepseek-chat and deepseek-reasoner have been upgraded to DeepSeek-V3.2.
DeepSeek's change log says: Both deepseek-chat and deepseek-reasoner have been upgraded to DeepSeek-V3.2.
Who it affects: DeepSeek API users calling model endpoints via deepseek-chat, deepseek-reasoner, or named model IDs.
What it means: Check the official change log entry and update model names or integration tests if your app pins a specific model version.
Official sources
Related pages: /guides/model-name-migration · /models · /news
Context for developers
The 2025-12-01 change log entry is short: both deepseek-chat and deepseek-reasoner backends moved to DeepSeek-V3.2 without altering the public API schema. Clients that pinned only the alias strings continued to work at the time; quality and latency characteristics could change because weights changed underneath.
Those aliases were later deprecated in 2026 in favor of explicit V4 names — see the model name guide for the retirement schedule. This post is historical context for logs that mention "V3.2 upgrade."
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