DeepSeek V4.1 Flash: Architecture Analysis, Benchmarks, Pricing, and API Integration Guide
A technical analysis of DeepSeek V4.1 Flash (deepseek-v4.1-flash). Covers Multi-Head Latent Attention v2, fine-grained MoE routing, 64.8% on SWE-bench Verified, native multimodal vision tokens, $0.07/1M cached input pricing, NVIDIA NIM deployment, and OpenAI/Vercel AI Gateway code integration.