[KongchangAI]
ModelDeepSeek v4.1 Flash / v4.1-Flash-1017

DeepSeek-v4.1-Flash-1017

A version in DeepSeek's Flash lightweight model series, positioned as inference-optimized for low latency, low cost and high-concurrency scenarios. The 1017 in the version number is a date-cutoff identifier. DeepSeek has not yet published a technical report or benchmark data for this version.

Timeline (last 90 days)

Oct 17

The model name DeepSeek-v4.1-Flash-1017 appeared and was exposed on Hacker News.

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Oct 17

The date suffix in the version name (such as 1017) most likely corresponds to the time anchor of October 17.

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Oct 17

A minor version number like v4.1 suggests this is an incremental update rather than an architectural refactor, and developers should expect stability improvements, instruction-following fine-tuning and inference throughput optimization rather than a leap in capability.

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Oct 17

In the absence of official materials, any claim about the magnitude of performance improvement of DeepSeek-v4.1-Flash-1017 lacks a basis.

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