DeepSeek-V4.1-Flash Release
Official release of DeepSeek-V4.1-Flash, the smallest model in the new architecture family with native multimodal visual understanding.
DeepSeek changelog: September 2026
1 release on
Everything DeepSeek shipped in September 2026, collected from official DeepSeek sources. Each entry is dated and links to the page it came from.
September 2026 at a glance
September 2026 was DeepSeek's 2nd busiest month of the 12 months to then: 1 release, about 2× its monthly average of 1. That was 1 release fewer than August 2026. Every release this month was Model.
Releases
1
-1 vs August 2026
Rank of 12 months
2nd
Average 0.5 a month
Most shipped
Model
1 release
All DeepSeek releases in September 2026
Newest first. Each entry links to the official page it came from.
September 20261 release
Where September 2026 sits
DeepSeek releases per month, for September 2026 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.
Other companies in September 2026
26 of the companies we track shipped in September 2026; DeepSeek ranks 24th by number of releases.
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