While frontier labs fight over the smartest model, DeepSeek keeps winning a quieter war: the cheapest capable model. DeepSeek V4.1 Flash has replaced the retired Flash routes, with V4 Pro continuing as the heavy-duty option.
What Changed
V4.1 Flash: budget route for high-volume work. V4 Pro: maximum capability. If you built on old Flash endpoints, migrate to V4.1 Flash.
When Cheap Beats Smart
Use V4.1 Flash for: classification, extraction, routing, and any high-volume low-complexity work. Use Pro for: reasoning, complex analysis, anything where quality differences matter.
The professional move is tiering: route 90% of calls to Flash, 10% to Pro. Most builders default to the smartest model and get shocked by the bill.
Bottom Line
Price disruption is DeepSeek’s strategy. V4.1 Flash continues it. Check current pricing on deepseek.com before budgeting.