DeepSeek V4.1 Flash API

DeepSeek V4.1 Flash through PixMind's OpenAI-compatible chat completions endpoint.

Provider

DeepSeek

Model ID

deepseek-v4.1-flash

Endpoint

POST /api-platform/v1/chat/completions

Open model playground Create API key

Model notes

Keep the API key on your server and use streaming when the client needs incremental output.
Peak hours are Monday to Friday 09:00-12:00 and 14:00-18:00 (UTC+8); all other times, including weekends, are off-peak. The tier is selected by the time the request is billed.
DeepSeek V4.1 Flash offers a 1M-token context window, up to 384K output tokens, image input, tool calling, and three thinking levels (low / high / max, enabled by default).

Request parameters

Parameter	Type	Required	Description
`model`	string	Yes	Stable PixMind model ID. Use `deepseek-v4.1-flash`. Allowed values: `deepseek-v4.1-flash`
`messages`	array	Yes	OpenAI-compatible chat messages. Gemini user content may be a string or an array of text, image_url, and video_url blocks.
`max_tokens`	integer	No	Maximum number of completion tokens to generate. Default: `4096`
`temperature`	number	No	Sampling temperature for the response. Allowed values: `0`, `0.5`, `1`, `2` Default: `1`
`stream`	boolean	No	Return tokens incrementally when enabled. Allowed values: `true`, `false` Default: `false`

Request example

cURL

curl https://aihub-admin.aimix.pro/api-platform/v1/chat/completions \
  -H "Authorization: Bearer $PIXMIND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "deepseek-v4.1-flash",
  "messages": [
    {
      "role": "user",
      "content": "Draft three launch concepts for this product."
    }
  ],
  "stream": false
}'

JavaScript

const response = await fetch("https://aihub-admin.aimix.pro/api-platform/v1/chat/completions", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.PIXMIND_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
  "model": "deepseek-v4.1-flash",
  "messages": [
    {
      "role": "user",
      "content": "Draft three launch concepts for this product."
    }
  ],
  "stream": false
})
});

const task = await response.json();

Accepted task response

Generation is asynchronous. Save taskId and poll GET /api-platform/v1/tasks/{taskId} until status is ready or failed.

200 OK

{
  "code": 1000,
  "data": {
    "id": "img_44160",
    "taskId": 44160,
    "type": "image",
    "model": "deepseek-v4.1-flash",
    "status": "processing"
  }
}

API pricing

Configuration	Price
Input · peak hours	168 credits (~$0.18) / 1M tokens
Output · peak hours	672 credits (~$0.71) / 1M tokens
Cache read · peak hours	3.36 credits / 1M tokens
Input · off-peak hours	84 credits (~$0.09) / 1M tokens
Output · off-peak hours	336 credits (~$0.36) / 1M tokens
Cache read · off-peak hours	1.68 credits / 1M tokens

API pricing uses the apiPlatform role and is separate from PixMind Studio credits. The accepted task response is the final pricing snapshot.