DeepSeek V4.1 Flash

Overview

High-efficiency open model from DeepSeek delivering frontier-class reasoning and coding ability at a fraction of typical frontier pricing. DeepSeek V4.1 Flash supports up to 1.0M tokens of context, and an extended reasoning mode. Served through the FirmLink unified API with OpenAI-compatible endpoints.

API example

Fully OpenAI-compatible — just change the model field.

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

Pricing

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