October 18, 2026
DeepSeek-V4.1-Flash-1017: 1 million-token context model under MIT license

On Oct 17, DeepSeek released V4.1-Flash-1017, a minor update with a 1 million-token context window and a maximum response of at least 256,000 tokens. The model is better at coding, reasoning and agentic tasks, and its answers are shorter.