DeepSeek reverses course, keeps V4 Pro API billing unchanged past Sept 14
By Rob Litterst, Co-founder, PricingSaaS
Published
DeepSeek’s pricing page · Change detected
What changed
DeepSeek reversed its planned Sept 14 retirement of the V4 Pro model. A day earlier, the company had said Pro API requests would reroute to V4.1 Flash pricing once V4 Pro was retired; the new footnote instead says the Pro API continues, with billing unchanged, past that date.
Why it matters
For developers on V4 Pro, nothing changes in practice — billing stays as it was. But the whipsaw suggests DeepSeek doesn't yet have a stable answer for what happens to Pro once a V4.1 successor ships. Watch whether a V4.1 Pro model appears before the next retirement attempt, and whether DeepSeek's roughly-weekly change cadence keeps up.
In context
This is DeepSeek's fourth pricing-restructure move since tracking began July 27, and it reverses a decision made barely a day earlier — the Sept 11 notice that set the V4 Pro retirement and Flash-price reroute. At roughly one change every eight days over the last 90 days, DeepSeek is pricing by trial balloon: announce, gauge reaction, adjust. It did the same in August, floating 2x peak-hour surge pricing then dropping it a week later for a vaguer warning. Pricing restructures made up 13.7% of the 5,456 changes tracked index-wide in the last 180 days, but few flip this fast — DeepSeek is out-pacing even serial restructurers like Datadog and Twilio on speed alone.
What people are saying
“> In response to user demand, we have decided to continue providing API services for DeepSeek V4 Pro after September 14, 2026, with the billing method remaining unchanged. We will provide further notice should there be any changes. Thank you for your understanding and support! sad”
View original“DeepSeek just changed course on V4 Pro. the plan was to route V4 Pro API requests to V4.1 Flash after Sept 14 until V4.1 Pro arrived. now they’re keeping V4 Pro available instead, at the same price. so Pro stays Pro, and Flash stays Flash. apparently enough users wanted the choice.”
View original“DeepSeek reversed a retirement it had already announced. V4 Pro was set to shut down, with traffic rerouted to V4.1 Flash and billed at the Flash price. DeepSeek now says it will keep providing API access to V4 Pro past September 14, 2026, billing unchanged, citing user demand. That is a real signal on how fast model deprecation timelines move in this market, and how often a vendor's own sunset date is not final until it actually happens. #DeepSeek #AI”
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