DeepSeek

DeepSeek V4.1 Flash 1017

Facts

Model id: deepseek/deepseek-v4.1-flash-1017
Context window: 1.05M
Maximum output: 393K
Data policy: No training · No zero retention

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Call it

Send the id as model. The quickstart has the key and the SDK setup; models, limits and data policy explains each field above.

bash

curl https://api.sylphx.ai/v1/responses \
  -H "Authorization: Bearer $SYLPHX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek/deepseek-v4.1-flash-1017","input":"Say hello in one sentence."}'