DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is a low-cost open-weights DeepSeek model released 2026-10-17. OpenRouter lists $0.15 per million input tokens and $0.6 output, with a 1,048,576-token context and text and image input. DeepSeek's own page quotes the same $0.15 and $0.60 off-peak, and says peak hours cost more. The licence in our data is MIT. We would suggest it for high-volume work such as summaries, routing and coding assistance on a budget, and for teams that want to compare hosts, since Together and Fireworks also list DeepSeek V4.1 Flash. The limit is that several dated Flash builds are listed, so we pin the exact name before comparing prices, and that data handling differs by host. We have not run it ourselves. Prices and specifications come from the OpenRouter listing we checked on 31 October 2026, and we have not tested the model ourselves.