DeepSeek V4 Release Likely Delayed Until Mid-August Amid Closed Testing Phase

DeepSeek V4 general availability may slip to August 10-20 following closed testing. This delay coincides with potential launches of GPT-6 and Claude Fable 5.1, intensifying competitive pressure.

Woofun AI reports that the official general availability of DeepSeek V4 is potentially postponed until mid-August. The project is currently conducting closed testing via Harness, selecting participants from survey respondents. Following this phase, a limited release window of one to two weeks is anticipated, targeting an arrival between August 10th and 20th.

If accurate, this timeline places DeepSeek V4 in direct competition with next-generation models such as GPT-6, Claude Fable 5.1, and GLM-5.5, which may already be available in the market by that time.