DeepSeek / deepseek/deepseek-v4.1-flash-1017
DeepSeek V4.1 Flash 1017 - access through LLMTR
DeepSeek V4.1 Flash 1017 is DeepSeek's 17 October 2026 update to V4.1 Flash and stays on that release; unlike `deepseek/deepseek-flash` it does not move to a later version. DeepSeek reports better results in reasoning, coding, agent and visual tasks, with tasks finished in shorter output. The 1,048,576-token window is shared between input and output. It accepts image input (base64 or an https link), tool calling, JSON mode and schema-constrained output. Thinking is off by default: send `reasoning_effort: "high"` to turn it on, or `"none"` to keep it off; thinking tokens bill as output. The price is the same at every hour of the day. The introductory price applies until the end of 23 October 2026 (TRT); from 24 October 2026 the standard rate applies.
Technical specifications
| Canonical ID | deepseek/deepseek-v4.1-flash-1017 |
|---|---|
| Provider | DeepSeek |
| Context window | 1,048,576 tokens |
| Operations | CHAT_COMPLETIONS |
| Modalities | text, image |
Pricing
An 8% platform margin applies to credit top-ups; model usage prices are not separately marked up.
| Operation | Metric | Unit | Price |
|---|---|---|---|
| CHAT_COMPLETIONS | INPUT_TEXT | PER_1M_TOKENS | $0.140000 |
| CHAT_COMPLETIONS | CACHE_READ | PER_1M_TOKENS | $0.004200 |
| CHAT_COMPLETIONS | OUTPUT_TEXT | PER_1M_TOKENS | $0.420000 |
Example usage
With existing OpenAI SDK flows, change only the base URL and model identifier.
curl https://llmtr.com/v1/chat/completions -H "Authorization: Bearer llmtr-your_key" -H "Content-Type: application/json" -d '{"model":"deepseek/deepseek-v4.1-flash-1017","messages":[{"role":"user","content":"Hello"}]}'Guides about this model
- DeepSeek V4.1 Flash 1017: which model id to choose - DeepSeek V4.1 Flash 1017 is called on LLMTR with three ids. The row that, per the provider's statement, processes requests inside the European Union is TensorX's. If cost comes first, deepseek/deepseek-v4.1-flash-1017 serves the same release at a lower price that does not change by hour; deepseek/deepseek-flash follows DeepSeek's current release.
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