DeepSeek V4.1 Flash

deepseek/deepseek-v4.1-flash

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

InputImageText
OutputText
Input / Outputclub$0.318 / $1.272per 1M tokens · USD
Context window1Mtoken
Maximum output384Ktoken

Pricing

Current model usage rates. Choose your plan to see its published prices.

Pricing
UsagePricing
InputUS$0.318/ 1M token
Cache readUS$0.00636/ 1M token
OutputUS$1.272/ 1M token

Membership and model usage are billed separately. Compare plans

Capabilities

Input
ImageText
Output
Text
Context window
1,048,576 token
Maximum output
384,000 token
Reasoning
max · high · low

Providers

Model supply available through Vecbase.

Via OpenRouter

Access is subject to your account’s permissions and model availability.

Frequently asked questions

What is DeepSeek V4.1 Flash, and who develops it?

DeepSeek V4.1 Flash is a model from DeepSeek. Its model ID on Vecbase is deepseek/deepseek-v4.1-flash. DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

How much does DeepSeek V4.1 Flash cost on Vecbase?

For DeepSeek V4.1 Flash, the Club plan lists USD 0.318 per 1 million input tokens and USD 1.272 per 1 million output tokens, as of 10/22/2026, 9:26:00 PM UTC. See the pricing table for cache rates, input-length tiers and other usage types. Membership fees are separate.

How many tokens fit in DeepSeek V4.1 Flash’s context window?

DeepSeek V4.1 Flash has a context window of 1,048,576 tokens. Input and output must fit within the limits of the API you use.

What is the maximum output length for DeepSeek V4.1 Flash?

DeepSeek V4.1 Flash can generate up to 384,000 tokens per response. Your API or request settings may set a lower limit.

Can DeepSeek V4.1 Flash call tools in an agent workflow?

Yes. DeepSeek V4.1 Flash supports tool calling. Your application provides the tool definitions and runs the tools the model requests.

Does DeepSeek V4.1 Flash support structured outputs?

Yes. DeepSeek V4.1 Flash supports structured output. Set the required format in your API request and check the returned data before using it.

Which input and output formats does DeepSeek V4.1 Flash support?

DeepSeek V4.1 Flash accepts Image and Text and produces Text.

Which providers make DeepSeek V4.1 Flash available through Vecbase?

Vecbase offers DeepSeek V4.1 Flash through OpenRouter. Availability may vary by provider.

Which model ID should an agent use to request DeepSeek V4.1 Flash?

Use deepseek/deepseek-v4.1-flash as the model identifier for DeepSeek V4.1 Flash. See Vecbase’s API documentation for authentication, required inputs and supported request formats.

Which reasoning settings are listed for DeepSeek V4.1 Flash?

DeepSeek V4.1 Flash supports these reasoning levels: max, high, and low. Available options depend on your API.

What does an agent need to access DeepSeek V4.1 Flash through Vecbase?

To use DeepSeek V4.1 Flash, you need an authenticated account with the required permissions, sufficient balance and the relevant capability enabled. See the documentation for setup.

Is a release date available for DeepSeek V4.1 Flash?

We do not yet have a confirmed release date for DeepSeek V4.1 Flash.

Which models can I compare with DeepSeek V4.1 Flash on Vecbase?

You can compare DeepSeek V4.1 Flash with DeepSeek V4 Flash (deepseek/deepseek-v4-flash), DeepSeek V4 Pro (deepseek/deepseek-v4-pro), and DeepSeek V4 Flash 0731 (deepseek/deepseek-v4-flash-0731). Check their capabilities and prices to find the best fit for your task.