On 17 October 2026, DeepSeek released and open-sourced V4.1 Flash 1017 under the MIT license: a 763-billion-parameter MoE with a one-million-token context and self-feedback RL post-training that improves coding and agent use. Existing deepseek-flash API users get it with no code change and no price increase.
On September 10, 2026, DeepSeek shipped V4.1 Flash, an open multimodal model that cuts KV cache memory fourfold and lowers API prices by 11 to 57 percent; V4 Pro requests will be routed to Flash starting September 14. Re-benchmark your workloads before that date.
On August 13, 2026, DeepSeek moved V4-Pro to general availability and published its weights on Hugging Face under an MIT license. Independent benchmarks rank it third globally, but only three points ahead of its smaller sibling V4-Flash.
In two weeks of August 2026, DeepSeek introduced peak/off-peak billing, Google launched a tier whose price doubles in January 2027, and Anthropic cancelled a planned increase. For anyone budgeting inference spend, the per-token price is no longer a fixed number but a three-variable equation.
On July 31, 2026, DeepSeek upgraded its V4 Flash model through re-post-training alone, with zero architecture changes. The result: the smaller 13B active parameter model now outperforms the larger V4 Pro on nine coding benchmarks.
