
DeepSeek to Route V4-Pro Traffic to V4.1-Flash on Sept. 14
DeepSeek said on 2026-09-10 that at 04:00 UTC on September 14, calls to deepseek-v4-pro will be served by V4.1-Flash and billed on Flash rates—same request name, different model and cost. Teams should re-eval tool use, schemas, latency, and spend before that cutover, not after…










