DeepSeek V4 Preview Unleashes 1.6 Trillion Parameters and 1M Token Context, Rivals GPT-5.4 in Coding

DeepSeek has officially launched DeepSeek-V4 Preview, a groundbreaking open-source release set to democratize advanced AI. Announced on April 24, 2026, the update introduces two models: the massive DeepSeek-V4-Pro with 1.6 trillion parameters, and the efficient DeepSeek-V4-Flash with 284 billion parameters. Both feature an unprecedented 1 million token context window, enabling complex reasoning and long-form understanding. DeepSeek highlights drastically reduced inference costs, making cutting-edge AI accessible to developers worldwide. Early benchmarks show DeepSeek-V4-Pro matching GPT-5.4 in competitive coding tasks, with superior reasoning and enhanced agentic capabilities. This release positions DeepSeek as a powerful, cost-effective open-source alternative to proprietary models.