DeepSeek V4.1 Flash Hits AI Gateway

This is a meaningful infrastructure upgrade for developers building latency-sensitive agents: DeepSeek’s open-weight model gets a fast, unified gateway route without sacrificing its long-context and tool-use features.

• –1M-token context makes it practical for large repositories, documents, and long-running agent sessions.
• –Multimodal input, reasoning, tool calling, and structured outputs cover the core requirements of coding agents.
• –Fireworks-backed acceleration makes the model attractive for interactive coding and high-volume inference.
• –Developers should benchmark real agent workloads: advertised throughput can differ materially from live traffic, prompt length, and output configuration. [Vercel model metrics](https://vercel.com/ai-gateway/models/deepseek-v4.1-flash-1017-ultrafast)