DeepSeek Releases V4.1 Flash Update

On October 17, DeepSeek released V4.1-Flash-1017, improving Terminal-Bench 4.0 scores from 31.2 to 42.3. The model achieves a 77% Pass@1 score at $0.20 per task, ranking first among open-weight models with a median cost of approximately $0.18 per task by October 20.