DeepSeek V4 Flash - Unifically

DeepSeek V4 Flash is the versioned deepseek-v4-flash model ID. DeepSeek retired the 0731 model on September 10, 2026 and now answers this ID with DeepSeek V4.1 Flash, so existing integrations keep working. New code should use deepseek/deepseek-flash.

Model

deepseek/deepseek-v4-flash


Provider	DeepSeek
Name	DeepSeek V4 Flash

Supported Endpoints

All three API formats are supported:

Chat Completions — POST /v1/chat/completions
Responses — POST /v1/responses
Messages — POST /v1/messages

DeepSeek models bill at 2x during peak hours: Monday to Friday, 01:00–04:00 and 06:00–10:00 UTC. The rate is fixed when the request starts. See pricing for current rates.

Example

curl -X POST https://api.unifically.com/v1/chat/completions   -H "Content-Type: application/json"   -H "Authorization: Bearer YOUR_API_KEY"   -d '{
    "model": "deepseek/deepseek-v4-flash",
    "messages": [
      {"role": "user", "content": "Summarize this changelog in three bullet points."}
    ]
  }'

Volume discounts are available for almost all models. Reach out at contact@unifically.com to discuss custom pricing.

​Model

​Supported Endpoints

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Model

Supported Endpoints

Example