LongCat

The official dialogue platform of Meituan's self-developed large model integrates deep thinking, online search, and image & video generation into one. It supports in-depth research and opens up APIs and mobile applications, making it convenient for individuals and developers to access and use.

AI Chatbot#LLM#Chat Assistant#Meituan

Updated: 2026-10-26

What is LongCat?

LongCat is the official dialogue platform of Meituan's self-developed large model, with the slogan "Beyond Scale". It integrates deep thinking, online search, image and video generation into a single interface, and also provides an API open platform and mobile applications. It is a rare dual-line product of "web version + developer interface" among domestic large models. For ordinary users, it is a comprehensive dialogue portal that can chat, search and generate images; for developers, it is also a model service that can be directly integrated into their own products.

Who is it for?

Suitable for individual users who already use domestic large models for daily Q&A, writing and information retrieval; suitable for content creators who need image and video materials, who can complete topic selection, image generation and final production in one conversation; also suitable for developers and small teams who want to access domestic model capabilities and integrate them into products at a lower cost. It is particularly friendly for Chinese scenarios, with Chinese Q&A and writing expressions that better fit the usage habits of local users. Enterprises can also first test the waters with it for internal tasks like knowledge Q&A and first drafts of marketing copy.

Key features

Deep Thinking

When faced with complex problems requiring multi-step reasoning, it first presents the reasoning process before drawing a conclusion, rather than directly giving an answer. When performing tasks such as logical deduction and scheme decomposition, you can see the complete "thinking process" behind it, making the answers more well-founded and making it easier to identify loopholes in the deduction.

Internet Search

It incorporates real-time information when answering questions, making up for the blind spots in the model's training knowledge due to the cutoff time. It is more reliable for checking the latest news, policy documents, and product updates, eliminating the need to repeatedly switch browsers for supplementary research. You can ask it first for any questions related to timeliness.

Image Generation

Generate images directly within the conversation. For needs such as posters, illustrations, and pictures, there is no need to switch to other tools. The style and details can be adjusted back and forth in the conversation until you are satisfied.

Video Generation

Generate video content within the same conversation flow, centralizing multimodal creation in one place. It is ideal for quickly producing short video clips, eliminating the need to switch back and forth between multiple tools.

In-depth Research

For research-oriented inquiries requiring the organization of full-length materials, it automatically generates structured long-form content, eliminating the need to flip through pages one by one and manually summarize information. It is suitable for compiling data reviews, drafting reports, and writing plans.

API Open Platform

Developers can apply for API keys separately to integrate LongCat's model capabilities into their own products, enabling batch calls and system integration, making it suitable for secondary development at the application layer.

Mobile App

The official website provides downloads for the mobile version of the App, allowing you to continue conversing during fragmented time such as commutes and lunch breaks. The mobile and web versions offer a seamless connection, enabling you to pick up the conversation anytime and anywhere.

How to use LongCat

If you only need to try it occasionally, just use the web version.
for batch calls or product integration, it's more suitable to use the API open platform.
For in-depth research questions, it's recommended to describe the requirements in detail, clarify the background, objectives and length, and the output structure will be closer to what you want.
For multimodal generation, you can start with images, get familiar with the styles and instructions, and then try videos.
When collaborating in a team, you can agree on a unified question template to keep the output format of team members consistent, which will make subsequent sorting and reuse more convenient.

Things to know

You need to log in first to start a conversation on the web version, and you have to register an account if you're using it for the first time.

The platform clearly marks "Content generated by AI, please carefully verify", and it is recommended that you conduct your own review before adopting factual conclusions, data or citations.

Deep thinking and multimodal generation consume significant computing power, so the response time may be longer than that of ordinary Q&A. Please pay attention to the rhythm during batch creation.

An API key needs to be applied for separately, and the specific quotas and billing rules shall be subject to the official website's open platform page.