DeepSeek V4 Flash Open Source: 13B Activations Nearly Match Closed Source Ceiling, Now Free

DeepSeek didn't change its architecture or increase parameters; it simply refined the post-training process. This has allowed the Flash official version to surpass its own Pro preview across 9 Agent benchmarks, with its intelligence score just 1 point shy of GPT-5.6 Luna. The weights are open-sourced under the MIT license, and the model can be downloaded in just 167GB. We've analyzed the benchmarks and pricing to help you decide if it's time to switch.