25 Apr 2026
DeepSeek V4 and the April 2026 Open-Source Pile-On
(01)DeepSeek V4 is no longer alone. GLM-5.1 leads SWE-Bench Pro, Kimi K2.6 runs 300-agent swarms, Qwen 3.6 ships dense Apache-2.0 weights, and V4-Pro hits #1 on LiveCodeBench. The April 2026 open-source pricing reset is real.
DeepSeek V4