[ DeepSeek ]

DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 from DeepSeek: a text model for chat and completions, with a 1,048,576-token context window and up to 131,072 output tokens. Routed to the cheapest source. At or below list. Pay per token in USDF, with no subscription and no minimum. Streaming and the OpenAI-compatible request format are supported.

Get an API keyTry in Playground
DeepSeekdeepseek-v4.1-flash-1017AvailabletextContext window: 1,048,576 tokens

Input

$0.20

per 1M tokens

Output

$0.60

per 1M tokens

Cached input

$0.006

per 1M tokens

Context window

1,048,576

tokens

Model ID
deepseek-v4.1-flash-1017
Modality
text
Unit
USD per 1M tokens
Endpoints
/v1/chat/completions
Max output
131,072 tokens

Data policy

Zero retentionNo training

Make your first request

Use any OpenAI-compatible SDK. Change the base URL, keep everything else. Responses include a receipt with the exact cost. No key yet? Create one.

No account: send the same request to /x402/v1/chat/completions without credentials and the gateway answers 402 with the quote. Pay per request.

curl https://api.usdf.fi/v1/chat/completions \
  -H "Authorization: Bearer $USDF_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "deepseek-v4.1-flash-1017", "messages": [{"role": "user", "content": "Hello"}]}'