Workers AI - DeepSeek V4.1 Flash 1017 now available on Workers AI

@cf/deepseek-ai/deepseek-v4.1-flash-1017 is now available on Workers AI. DeepSeek V4.1 Flash is a multimodal Mixture-of-Experts model with 552B backbone parameters. It activates 8B parameters per token during prefill and 16B during decode, which keeps input-heavy agentic workloads fast and low-cost.

The 1017 release is an update to DeepSeek V4.1 Flash with improvements across reasoning, coding, agentic tasks, and visual benchmarks, and it completes tasks with shorter outputs.

Key capabilities:

• Vision: Send images alongside text in the same request.
• Reasoning: Reasoning is on by default at high effort. Set reasoning_effort to low or max to change the effort, or to none to turn reasoning off.
• Function calling: Build agents that invoke tools and APIs across multiple conversation turns.
• Long context: A full 1,048,576 token context window.

DeepSeek V4.1 Flash requires the Workers Paid plan or prepaid AI Gateway credits. The default rate limit is 20 requests per minute with standard Workers AI billing and 50 requests per minute with prepaid AI Gateway credits. For details, refer to limits.

Use DeepSeek V4.1 Flash through the Workers AI binding (env.AI.run()), the REST API, the OpenAI-compatible endpoint, or AI Gateway.

For more information, refer to the DeepSeek V4.1 Flash model page and pricing.