Deepseek V4 on AI Gateway (opens in new tab)

**Published:** April 23, 2026 | **Authors:** Walter Korman, Rohan Taneja, Jerilyn Zheng --- DeepSeek V4 is now available on Vercel AI Gateway. There are 2 model variants: DeepSeek V4 Pro and DeepSeek V4 Flash. A 1M token context window is the default across both models. DeepSeek V4 Pro focuses on agentic coding, formal mathematical reasoning, and long-horizon workflows. It handles feature development, bug fixing, and refactoring across stacks, with tool use that works across harnesses lik...