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Model catalogueDeepSeek V4.1 Flash

DeepSeek V4.1 Flash

30% OFFOnlineNEW

Model ID

Put this value in the request body's `model` field — not the display name above.

Text generationReasoningImage understandingToolsJSONPrefix1MOpen source

by DeepSeek · DeepSeek V4.1 Flash: a 552B-parameter MoE (asymmetric causal encoder-decoder) with native multimodal vision, 1M context and up to 384K output, thinking mode on by default, connected to DeepSeek directly. Billed at DeepSeek's official peak / off-peak prices: full price on weekdays 9:00-12:00 and 14:00-18:00 Beijing time, half price at all other times, including weekends and public holidays.

Try it now

Quick start

EndpointPOST /v1/chat/completions
AuthenticationAuthorization: Bearer sk-gpushare-…Get API key
Call styleSynchronous: one request returns the result
Base URLhttps://api.dflop.top/v1
cURL
curl https://api.dflop.top/v1/chat/completions \
  -H "Authorization: Bearer sk-gpushare-xxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4.1-flash",
    "messages": [
      {"role": "user", "content": "你可以帮我做什么"}
    ]
  }'

Pricing

Billed per token: input and output are priced separately and settled on the upstream's reported usage.

Rates
Input 0.084Credits/K·Output 0.336Credits/K
  • Input tokens that hit the prompt cache are billed at 1.68 Credits / 1M — cheaper than full-price input.
  • Failed requests (upstream 4xx / 5xx) are not billed.
  • All your API keys share one balance; when it runs out the API returns HTTP 402 `quota_exceeded`.

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Capabilities & specs

Category
Text generation
Context window
1M tokens
Default max output
128k tokens
Endpoint family
Chat Completions
Protocols
OpenAI Chat
Released
2026-09-10
License
Open source
Health
9 min ago

Try it

Pick a key under "API access" and fire one real request to see the response — the estimated cost is shown before you send.

Try it in chat

Common errors

404 model_not_found

You passed the display name instead of the model ID.✗ DeepSeek V4.1 Flash→✓ deepseek-v4.1-flash

→ Copy the Model ID at the top of this page

402 quota_exceeded

Insufficient account balance. All your API keys share one balance.

→ Add funds in your account

401 / 403

The API key is invalid, or it has a model allowlist that doesn't include this ID.

→ Check the key's status and allowed models

400 invalid_request

A request body field is invalid, or this model doesn't support the protocol endpoint you called.

→ Check your request body against the sample code above

More models from this vendor

DeepSeek V4 Flashdeepseek-v4-flashDeepSeek V4 Prodeepseek-v4-pro
Try it

DeepSeek V4.1 Flash FAQ

How do I call DeepSeek V4.1 Flash?
Set the model field of the request body to deepseek-v4.1-flash, send it to https://api.dflop.top/v1/chat/completions, and put your key (it starts with sk-gpushare-) in the Authorization: Bearer header. The official OpenAI, Anthropic and Google Gemini SDKs all work directly; just point base_url at this gateway.
How much does the DeepSeek V4.1 Flash API cost?
  • ·Input: 120 credits (≈ ¥2 / ≈ $0.297) per 1M tokens
  • ·Output: 480 credits (≈ ¥8 / ≈ $1.19) per 1M tokens
  • ·Cached input: 2.4 credits (≈ ¥0.04 / ≈ $0.0059) per 1M tokens
  • ·Prices are in credits: 60 credits = ¥1. Each call first holds the most it could cost, then settles on actual usage and refunds the difference.
How large is DeepSeek V4.1 Flash's context window?
1,000,000 tokens, with a default output limit of 128,000 tokens per request.
What can DeepSeek V4.1 Flash do?
Image input, Tool calling, Thinking mode, JSON mode, Prefix completion, Open weights. Compatible protocols: OpenAI Chat Completions.

Input price is about $0.297 per 1M tokens. Markdown version of this page (Chinese): /models/deepseek-v4.1-flash.md

Related

  • All DeepSeek models