DeepSeek V4.1-Flash-1017 released with open weights and Search/Fetch APIs
Official minor update: live on web, app and API with MIT-licensed weights on Hugging Face; DeepSeek reports 77 vs 74.2 on DeepSWE v1.1; Search and Fetch cost $0.75 per 1,000 calls, free via Claude Code, Codex and DeepSeek Harness until Oct 31.

DeepSeek has released V4.1-Flash-1017, a minor update to its Flash model with open weights, and opened its Search and Fetch APIs to everyone. • Live on DeepSeek's website, app and API; weights on Hugging Face under an MIT license • 77 vs 74.2 on DeepSWE v1.1, by DeepSeek's own figures • Search and Fetch cost $0.75 per 1,000 calls; calls via Claude Code, Codex and DeepSeek Harness are free until Oct 31 Watch the 79-second short: https://dailychat.net/2026-10-17/deepseek-v4-1-flash-1017