Deepseek: deepseek-v4.1-flash
deepseek-v4.1-flash
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deepseek-v4.1-flash is a fast, cost-efficient large language model variant from DeepSeek, part of the broader DeepSeek model family designed to balance strong reasoning and coding ability with high throughput. The “flash” suffix typically indicates an inference-optimized tier focused on low latency and cheaper per-token serving, making it suitable for chatbots, copilots, and high-volume API workloads. While it generally has a smaller footprint and fewer advanced features than DeepSeek’s top-tier flagship models, it still supports common LLM tasks such as conversation, content generation, and code assistance. It is intended for developers and enterprises that need responsive, scalable LLM integration rather than maximum raw capability.
Pricing
Current price per 1,000,000 tokens. Every request is billed automatically from its exact usage.
Included in plans
Statistics
Live performance and usage of this model, aggregated across all users.
Detailed statistics appear here as soon as this model starts receiving requests.
API
Call this model from any OpenAI-compatible client using your API token.
curl https://apiex.cloud/api/v1/chat/completions \
-H "Authorization: Bearer $NEW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in one paragraph."
}
],
"temperature": 0.7
}'Authentication
Every request must include an Authorization: Bearer <TOKEN> header. Generate a token from your account's API Keys page — its access to models is set automatically from your active plans and redeemed codes, and you can set its rate limit and IP restrictions.
| Parameter | Type | Description |
|---|---|---|
model | string, required | This model's ID, exactly as shown above. |
messages | array, required | Conversation history as role/content objects (system, user, assistant). |
temperature | number, optional | Sampling randomness, typically 0–2. |
max_tokens | integer, optional | Upper limit on tokens generated in the reply. |
top_p | number, optional | Nucleus-sampling threshold, as an alternative to temperature. |
stream | boolean, ignored | Responses are always returned in full so the exact cost can be billed; streaming is not available. |
Replace YOUR_API_KEY with a token from your account, then see the full API reference for every parameter.
Frequently asked questions
What is deepseek-v4.1-flash?
deepseek-v4.1-flash is a fast, cost-efficient large language model variant from DeepSeek, part of the broader DeepSeek model family designed to balance strong reasoning and coding ability with high throughput. The “flash” suffix typically indicates an inference-optimized tier focused on low latency and cheaper per-token serving, making it suitable for chatbots, copilots, and high-volume API workloads. While it generally has a smaller footprint and fewer advanced features than DeepSeek’s top-tier flagship models, it still supports common LLM tasks such as conversation, content generation, and code assistance. It is intended for developers and enterprises that need responsive, scalable LLM integration rather than maximum raw capability.
How much does deepseek-v4.1-flash cost?
Input tokens are priced at $0,18 per 1,000,000 tokens and output tokens at $0,72 per 1,000,000 tokens. Pricing is billed automatically per request; no separate plan is required.
What is the context length of deepseek-v4.1-flash?
deepseek-v4.1-flash supports a context window of up to 1,048,576 tokens.
Does deepseek-v4.1-flash support image input?
Yes, deepseek-v4.1-flash accepts image input in addition to text.
Which provider is deepseek-v4.1-flash from?
deepseek-v4.1-flash is developed by Deepseek and made available on this gateway through our routing infrastructure.
When was deepseek-v4.1-flash added to this gateway?
deepseek-v4.1-flash has been available on this gateway since September 23, 2026.
Is deepseek-v4.1-flash currently available?
Yes, deepseek-v4.1-flash is active and can be used right now through this gateway.
