DeepSeek-V4.1-Flash-1017.
DeepSeek-V4.1-Flash-1017. Open weights · MIT. Released 2026-10-17.
Plaque URL: archive2050.xyz/archives/20261017-02-deepseek-v4-1-flash-1017/
The original note is on X · @xiao_2146
Filed also · Silicon Nexus
X is the day's note. This page is the specimen. Nexus is the rubbing for engines.
They upgraded the agent under the same API name.
DeepSeek-V4.1-Flash-1017. Open weights · MIT. Released 2026-10-17.
On that day DeepSeek shipped Flash-1017 on its website, app, and API — better agent scores, faster runs, shorter outputs — and dropped the checkpoint on Hugging Face under MIT. A multimodal MoE with a 552B backbone: about 8B parameters active in prefill, 16B in decode, and a one-million-token window. Builders who never changed their endpoint woke up to a different mind. Search and Fetch went public the same afternoon.
Same endpoint. Same price. Different mind.
We file Flash-1017 as the day an open weight arrived wearing yesterday’s API badge — and the ledger recorded a silent upgrade, not a press tour.
The cheap mind did not ask permission to improve.