› DeepSeek V4.1 Flash 1017 combines an updated open-weight checkpoint with a new search offering as of October 2026.
› I tested the model via the API on October 19, and it completed all 12 tasks in my test in Polish.
› That result is separate from DeepSeek's own coding benchmarks and from the Search API, which this test did not use.
› In short The October 17 checkpoint is available under MIT.