❯ DeepSeek lets V4.1 Flash carry a generational change, as a leak points to a 3T-parameter Code 2.0 in September

Version held downThe architecture change in DeepSeek’s V4.1 Flash, released last week, is large enough that the industry treats it as a generational step, yet the version number stayed. Its documentation describes a 552-billion-parameter MoE with a new Causal-Encoder-Decoder structure and native multimodality.

What the leak claimsA leak claims DeepSeek will also ship DeepSeek Code 2.0 in September, expected to beat Mythos 5.1 and GPT-6 Astra, with more than 3 trillion parameters, open weights and Computer Use as the focus. The leaker calls the claim hard to trust, and three earlier models with Code in the name went nowhere; the only official acknowledgement is that the next Pro model is called V4.1 Pro, with no specifications.

What happens to ProThe messaging changed more concretely: the September 10 notes said V4 Pro requests would move to V4.1 Flash at Flash rates after September 14, and the pricing page later kept V4 Pro available at unchanged rates. For teams choosing models, the comparison becomes unit cost and computer-control ability.

▪ SIGNALVersion numbers no longer mark a capability jump; unit cost is the column that has to change.