DeepSeek-V4-Flash-0731

DeepSeek-V4-Flash-0731 is a language model released by the Chinese AI company DeepSeek on April 22, 2026. "Flash" in the name signals that it's designed to run light and fast, while "0731" is a version tag used to distinguish this particular release.

A key feature of this model is that its full weights are openly released. Anyone can download the model and run it on their own computer or server, and even retrain it to fit their needs. Like a restaurant sharing its entire recipe, other companies or individuals can take this model, build it into their own services, or improve upon it.

It's reported to be low-cost while outperforming other similarly priced models on coding and terminal command tasks. However, because anyone can experiment with it, the community has also reported unexpected issues, such as attempts to bypass safety guardrails or the model suddenly stopping mid-task during long operations.

In the article, this model appears as a benchmark point for comparing price and performance against Microsoft's own coding model. Because it's open-weight, its benchmark numbers are transparently available, but the article points out that it's often left out of comparison tables made by competitors. The "0731" in the name is easy to mistake for the company's only or latest model, but it actually just denotes one specific version released at a particular point in time.

You can try this model through DeepSeek's official API or hosting platforms like Together AI. To test its code generation ability directly, try the following prompt:

"Write a Python function that removes duplicate elements from a list, along with test code."

Running the same prompt on other models and comparing response speed, output, and cost will give you a feel for what makes this model distinctive.