Yes—DeepSeek V4 is out
DeepSeek announced DeepSeek-V4 Preview on April 23, 2026, saying it was live and open-sourced, with access through its website and app and an updated API. DeepSeek later announced the launch of DeepSeek-V4-Pro on August 13, 2026; that announcement says Pro was available on web, app, and API. So the answer is yes: V4 Preview launched, and Pro followed as a production API offering. [1][2]
What the current first-party API lineup means
The current DeepSeek API documentation lists deepseek-v4-pro for DeepSeek-V4-Pro-0813 and deepseek-flash for DeepSeek-V4.1-Flash-1017. The older deepseek-v4-flash identifier is still accepted, but DeepSeek says that model is retired and requests using the old name are served by V4.1-Flash-1017 at the Flash price. These identifiers describe DeepSeek’s own API; third-party hosts may use different model names or limits. [3]
For the models in that first-party table, DeepSeek lists a 1M-token context length and a maximum output of 384K tokens. Its feature table lists vision support for deepseek-flash, but not for deepseek-v4-pro. Check the live documentation for the specific model before choosing it. [3]
For a quick cost comparison, peak output pricing is $1.20 per 1 million tokens for deepseek-flash and $3.96 per 1 million tokens for deepseek-v4-pro. DeepSeek lists off-peak rates at half the peak rates; peak hours are 01:00–04:00 and 06:00–10:00 UTC, Monday through Friday, excluding Chinese public holidays. Prices can change, so confirm the live pricing table before budgeting. [3]
Bottom line: DeepSeek V4 has launched, but the original V4 names do not all refer to the current first-party API lineup. For current integration details, check DeepSeek’s model table for the exact identifier, version, capabilities, and rates.
Sources
DeepSeek-V4 Preview: Entering the Era of Affordable Million-Token Context