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DeepSeek V4.1 Flash 1017

by DeepSeek · Language Models

Context 1049K tokensVisionReasoning / thinkingFunction calling

Overview

DeepSeek-V4.1-Flash-1017 improves benchmark performance while reducing task time and output length, with unchanged API and pricing. It natively supports a 1M context window, vision, reasoning, and tool use.

Context window1049K tokens
Max output393K tokens
Input → Outputtext, image → text
CapabilitiesVision, Reasoning / thinking, Function calling

Pricing

$0.15 in · $0.6 out · $0.003 cached / 1M

UsageRate (USD)Unit
Input tokens$0.15per 1M tokens
Cached input (cache hit)$0.003per 1M tokens
Output tokens$0.6per 1M tokens

Official model pricing · currency: USD · pre-deduction settled by actual usage

Call it in 30 seconds

OpenAI-compatible · base URL https://api.tunerouter.com/v1/

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

Model ID: deepseek-v4.1-flash-1017 · works with OpenAI SDKs — just point base_url at api.tunerouter.com

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