What Is Moonshot Kimi AI? K3.1 Pro and How to Use It

Kimi AI has changed a lot since Moonshot AI first released it. It is no longer just a long-context chatbot for reading documents. Moonshot introduced Kimi K3.1 Pro in October 2026 as its newest flagship, alongside Kimi Work for office tasks, Kimi Code for developers, and agent workflows for research, coding, slides, spreadsheets, and more. This guide explains what the new model adds and how to choose the right Kimi tool for your task.

What is Moonshot Kimi AI?

Kimi is an AI assistant and model family developed by Moonshot AI. The first Kimi assistant became known for long-context reading after its 2023 launch, but the current product is broader: it can chat, analyze files, search the web, write and debug code, create work documents, and run agent-style tasks.

The latest release is Kimi K3.1 Pro, announced by Moonshot AI on October 24, 2026. It is a 3T-class model developed from K3, with native visual understanding and a 1-million-token context window. Moonshot reports improvements in coding, 3D creation, financial research, and longer agent tasks. K3 remains available as the previous-generation model. For developers, the Kimi API supports familiar HTTP, Python, and Node.js workflows.

What changed from K3? In Moonshot's own Kimi Code Bench 3.0 Long-horizon evaluation, K3.1 Pro scored 61.2%, compared with 55.95% for K3. The company also reports gains in financial research and 3D modeling. These are vendor-reported results under specific test settings, not a guarantee that every prompt will improve. If you mainly need quick answers or document summaries, the model you already use may be sufficient; K3.1 Pro is most relevant when a task needs sustained coding, tool use, or complex analysis.

Who needs to use Kimi AI?

Kimi AI is a versatile tool designed to meet the needs of various professionals, enhancing their capabilities and streamlining their work processes. Here's a simple breakdown of who can benefit from using Kimi:

• Academics and Researchers: Kimi helps you swiftly read and deeply understand a plethora of literature, grasping the core of documents in your native tongue, interpreting complex academic notions, analyzing research outcomes, composing papers, and addressing reviewers' suggestions.
• Internet Professionals: Kimi aids in the efficient collection of information, supporting the drafting of competitive analyses, operational strategies, and providing valuable insights.
• Programmers: Kimi helps with code generation, debugging, repository understanding, API documentation, and long engineering tasks. Kimi Code is especially useful if you want to bring Kimi into a development workflow.
• Content Creators and Influencers: Kimi can collect materials, analyze references, summarize files and webpages, create drafts, and turn research into structured outputs such as articles, slides, or content plans.
• Legal Professionals: Kimi efficiently handles large volumes of case materials, organizes evidence, and clarifies legal policies, assisting in the composition of legal documents and reports, thereby boosting work efficiency.

What can Kimi AI do for you and how to use it?

Here are Kimi's main features and how they work in the current Kimi product family:

1. Translation

Kimi can translate English, German, French, Italian, Portuguese, Korean, Japanese, and other languages from many countries. Moreover, it supports longer text translation.

2. Image Recognition

Kimi can recognize and analyze key information within images. Newer Kimi models also support multimodal workflows: for example, you can upload screenshots or visual references and ask Kimi to explain them, turn them into frontend code, or use them as context for presentations and documents. It is still better to treat Kimi as a multimodal work assistant rather than a dedicated image-generation tool.

3. Coding

Kimi's programming assistant can read API documentation, explain existing code, generate snippets, and help debug errors. K3.1 Pro extends K3's long-horizon coding focus: Moonshot says it handles multi-step work in real codebases, terminal tools, and visually demanding frontend or 3D projects more effectively. In Kimi Code, start a new session and select K3.1 Pro from the model picker when you need those capabilities.

4. Article/Document Summarization

Kimi AI supports long-context reading, webpage analysis, and uploaded file analysis. Moonshot lists a 1-million-token context window for both K3.1 Pro and K3, but access to the full window can depend on the product and membership plan. Other model options may have smaller limits. In practice, Kimi can help with long reports, research folders, meeting notes, product documentation, and large batches of reference material; check the limit shown in the mode you select before planning a very large upload.

For example, if you want to understand a Chinese paper but don't speak Chinese; Or if you want to quickly grasp the key points or data of an article or report, you can directly send the material to Kimi for summarization.

The method is very simple: just send the article link or document along with your requirements to Kimi.

Based on this, we can also use Kimi in many cases:

• Multiple File Processing: Kimi can work with multiple documents, organize key information from each one, and turn the results into tables, briefs, or structured reports. Upload limits may vary by product mode and account plan;
• Meeting Organization: Convert meeting recordings into text transcripts. Send them to Kimi, and it can help you extract key topics and conclusions;
• Resume Optimization: Send your resume such as a PDF document to Kimi AI, and let it provide editing suggestions based on the job requirements you're applying for. You can assign it a role, such as HR from the other side, to give you more accurate optimization suggestions;
• User Review Analysis: Export user reviews of products, send them to Kimi, let it analyze them one by one, provide judgments on positive and negative sentiments, and then dig into the needs behind user comments or help you generate responses.

There are many other similar uses, here are some examples:

• Send the link to online notes to Kimi for reading and imitation;
• Send the product introduction page link to Kimi for writing product marketing copy;
• Send multiple research reports/sharing presentations on a certain topic to Kimi AI to summarize key points and form an outline, for quickly making a research presentation;
• Send problem logs or meeting records from our project recommendation process to Kimi to help us write retrospective summary reports;
• Export group chat messages to text and send them to Kimi to help you summarize group chats.

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5. Information Search and Analysis

Kimi AI can search for recent information online. You can ask it about current events, industry updates, or niche professional topics, then ask it to summarize the sources, compare viewpoints, and turn the result into a report. Moonshot's API platform also documents web search as an official Kimi API tool, which is useful when you need answers that cite fresh external information.

Here are two simple examples:

• Search and compile the latest industry news into reports: You can use Kimi's online search capability to prompt it to retrieve information from the web each time it runs, and then edit it into a report format;
• Retrieve information from specific pages: Kimi's search function can specify the search location. Using commands like "site:website", you can first limit where it retrieves information from, greatly improving the accuracy of information.

6. All-around Learning and Work Assistant

Q&A and content generation are Kimi's basic functions. In the past, you might have directly asked an AI assistant to help you generate text for a certain case.

But you can now use it in a more useful way: give Kimi your theory, source material, or brand guidelines first, then ask it to apply that context to the output. If you want to use Kimi-generated text in an article, essay, or report and make it sound less robotic, you can learn how AI checkers work and use our free AI humanizer tool to convert the text into a more natural, human-written style.

7. Role Play

Normally, we ask AI questions; but when we don't have clear questions or thoughts about our work, it's hard to ask valuable questions.

At this time, we can let Kimi initiate "questions" to us in reverse.

For example, you want to start a social media account but haven't figured out the specific topic. You can let Kimi play the role of our partner and give us ideas.

Or you want to develop a product and need to get budget approval from your superiors, but worry that you haven't thought clearly about the specific value and will be questioned by the leader. At this time, you can let Kimi play the role of a senior product designer or even your leader to ask you questions.

Kimi can also play the role of an interviewer, based on the company information, job description, and resume you provide, to simulate an interview with you.

8. Kimi K3.1 Pro, Kimi Work, Kimi Code, and Agent Swarm

Kimi's newer products make it more than a simple chat box. Kimi Work is designed for knowledge workers who need research, office documents, slides, spreadsheets, and scheduled workflows. Moonshot describes it as a workspace where Kimi can coordinate specialized agents, complete research, and convert insights into PowerPoint decks or Excel sheets.

Kimi Code brings Kimi into coding environments and now offers K3.1 Pro alongside K3 and other coding models. K3.1 Pro supports thinking mode only; Kimi's model guide recommends starting a new session when switching to it. A K3.1 Pro Highspeed option offers the same model capabilities at roughly 2–3 times the output speed, according to Moonshot, with different usage limits. For everyday users, use Kimi chat for quick Q&A, Kimi Work for research and office deliverables, Kimi Code for development, and the Kimi API for building Kimi into an application.

Agent Swarm is another important update. Instead of using one AI assistant to do every step sequentially, Kimi can coordinate multiple specialized agents for large tasks such as deep research, long-form writing, data gathering, website creation, or multi-format deliverables. This is most useful when the task is too broad for a single prompt and needs parallel research, planning, writing, and formatting.

Summary

Kimi now spans chat, models, coding tools, and work agents. K3.1 Pro is the current flagship for demanding coding and analysis; K3 remains an option, while Kimi Work and Kimi Code provide task-specific interfaces. Choose a model based on the work you need to finish, and review important outputs and cited sources yourself. If you have questions, feel free to contact us.

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References

• Kimi K3.1 Pro technical blog - Moonshot AI
• Kimi K3: Open Frontier Intelligence - Kimi
• Kimi API Quickstart - Kimi API Platform
• Kimi Work - Kimi
• Kimi Code Model Configuration - Kimi Code Docs
• Kimi K2.6 - Kimi