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Bytedesk Now Supports DeepSeek-V4.1-Flash: deepseek-flash Added to Default Models

· 3 min read
Jack Ning
Jack Ning
Maintainer of Bytedesk

DeepSeek has officially released the DeepSeek-V4.1-Flash model and recommends using deepseek-flash as the model name for all new integrations. Bytedesk has added deepseek-flash to its default model list, so teams can switch and configure it directly from the Bytedesk admin console without changing their integration.

What DeepSeek-V4.1-Flash Brings​

According to the official DeepSeek docs, DeepSeek-V4.1-Flash is the latest generation of the DeepSeek Flash series and is served through the deepseek-flash model name. Key capabilities:

  • 1M context with up to 384K output, ideal for long-document Q&A and large knowledge bases
  • Thinking mode (default) and non-thinking mode
  • Json Output, Tool Calls, Responses API, and Anthropic API support
  • Image understanding
  • Flash-tier pricing, optimized for online support, FAQ, and high-volume chat

New Model Name vs. Legacy Names​

DeepSeek has clarified the model naming:

  • Use deepseek-flash for all new requests
  • The legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp remain callable, but those models are offline; requests are now served by DeepSeek-V4.1-Flash and billed at Flash pricing
  • deepseek-v4-pro remains available, served by DeepSeek-V4-Pro-0813
Model nameServing versionNotes
deepseek-flashDeepSeek-V4.1-FlashRecommended for new setups
deepseek-v4-flashDeepSeek-V4.1-FlashLegacy name, still callable
deepseek-v4-proDeepSeek-V4-Pro-0813Still available

DeepSeek Models Available in Bytedesk​

Under the DeepSeek provider, Bytedesk now exposes the following models:

  • deepseek-flash
  • deepseek-v4-flash
  • deepseek-v4-pro

deepseek-flash has been added to the default model list, so you can select it directly on the AI model configuration page.

If you already use DeepSeek with Bytedesk, migrate as follows:

1. Switch the default model to deepseek-flash​

Replace the following legacy values with deepseek-flash:

  • deepseek-chat -> deepseek-flash
  • deepseek-reasoner -> deepseek-flash
  • deepseek-v4-flash -> deepseek-flash

If your workload depends on complex reasoning, long task chains, or agent performance, you can keep using deepseek-v4-pro.

2. Keep the base URL unchanged​

The DeepSeek-V4.1-Flash API endpoint has not changed:

https://api.deepseek.com

You only need to change the model parameter, not the endpoint.

3. Switch from the Bytedesk admin console​

  1. Log in to the admin console
  2. Open the AI model configuration page
  3. Select DeepSeek as the provider
  4. Set the default model to deepseek-flash
  5. Save and test a conversation

No chat embedding code changes are required, and the visitor-side integration stays untouched.

Choosing a Model​

  • For online customer service bots, prefer deepseek-flash.
  • For complex business Q&A, deep knowledge-base questions, and workflow assistants, choose deepseek-v4-pro.
  • When image understanding is required, use deepseek-flash.

Summary​

With the release of DeepSeek-V4.1-Flash, Bytedesk has added deepseek-flash to its default model list. Teams that need long context, multimodal understanding, and better cost efficiency for automated customer service should upgrade as soon as possible.

If you already use Bytedesk with DeepSeek, migrate your default model to deepseek-flash to take advantage of the latest V4.1-Flash capabilities.