The fastest DeepSeek v4.1 flash 1017 – Day 0 (runinfra.ai)

The launch of DeepSeek V4.1 Flash 1017 has excited the AI/ML community with its impressive capabilities. This large language model (LLM), available via RunInfra's Model APIs, offers a remarkable context window of 1,048,576 tokens, allowing for extensive interaction without losing context. Priced at $0.15 per million input tokens and $0.60 per million output tokens, it delivers both OpenAI- and Anthropic-compatible chat completions, facilitating seamless integration with existing tools and platforms. A standout feature of DeepSeek V4.1 is its automatic prefix caching mechanism, which optimizes session continuity by routing requests back to the specific replica holding their cached prefixes. This not only enhances response times but also supports greater interaction stability for users. The prefix cache is stored on the serving GPU and is managed under memory pressure, although retention is based on best-effort principles. As this model pushes the boundaries of token processing, its implications for developers and applications relying on long-context interactions could be transformative, setting a new standard in the LLM landscape.