DeepSeek V4.1 Flash lands on Workers AI: 552B total parameters, only 8B active per token for input-heavy agents
DeepSeek V4.1 Flash 1017 is now available on Cloudflare Workers AI. The multimodal Mixture-of-Experts model has a 552B-parameter backbone but activates only 8B parameters per token during prefill and 16B during decode, which keeps input-heavy agentic workloads fast and low-cost. The 1017 release improves reasoning, coding, agentic tasks and visual benchmarks over the prior Flash version and completes tasks with shorter outputs, with image-plus-text requests, reasoning on by default, multi-turn function calling and a 1,048,576-token context window.