Best AI Copilots in Japan

Cody

Sourcegraph

Cody, Sourcegraph’s AI code assistant goes beyond individual dev productivity, helping enterprises achieve consistency and quality at scale with AI. Unlike traditional coding assistants, Cody understands the entire codebase, enabling deeper contextual awareness for smarter autocompletions, refactoring, and AI-driven code suggestions. It integrates with IDEs like VS Code, Visual Studio, Eclipse, and JetBrains, providing inline editing and chat without disrupting workflows. Cody also connects with tools like Notion, Linear, and Prometheus to enhance development context. Powered by advanced LLMs like Claude 3.5 Sonnet and GPT-4o, it optimizes speed and performance based on enterprise needs, and is always adding the latest AI models. Developers report significant efficiency gains, with some saving up to six hours per week and doubling their coding speed.

87 Ratings

Starting Price: $0

View Software

Visit Website

Codeium

Exafunction

Codeium is a free AI-powered coding assistant that accelerates development by providing intelligent code autocompletion in over 70 programming languages and more than 40 IDEs, including VSCode, JetBrains, and Jupyter Notebooks. With Codeium, developers can write code faster, eliminate repetitive tasks, and stay in the flow state—whether they're working with Python, JavaScript, C++, or any other language. Built on billions of lines of open-source code, Codeium understands and anticipates your coding needs, offering multiline suggestions, automated unit tests, and even natural language explanations for complex functions. It’s perfect for streamlining code writing, reducing boilerplate, and cutting down the time spent on documentation searches. Trusted by individual developers and Fortune 500 companies alike, Codeium is your go-to solution for boosting productivity and writing better code. Try Codeium for free today and experience the future of AI-powered coding!

75 Ratings

Starting Price: Free

View Software

Visit Website

AskCodi

AskCodi.com

The Syntax Generating apps are the easiest way to get coding answers to your questions. It's simple to use, and you'll be amazed at how easy it is to get answers to your coding questions in the language you love. AskCodi has applications for frontend/backend development, documentation, test creators and much more, where users can ask questions and get answers. With over 50 popular languages and frameworks, AskCodi is continuously integrating support for more languages. A codebase where all the code generated for you to get back to it again in future. Immediately increase team productivity, streamline maintenance and debugging, and provide a shareable codebase for your workspace members. AskCodi supports multiple natural languages apart from english, like german, polish, spanish, etc.

37 Ratings

Starting Price: $9.99 per month

View Software

Qodo

Qodo (formerly Codium) analyzes your code and generates meaningful tests to catch bugs before you ship. Qodo maps your code’s behaviors, surfaces edge cases, and tags anything that looks suspicious. Then, it generates clear and meaningful unit tests that match how your code behaves. Get full visibility of how your code behaves, and how the changes you make affect the rest of your code. Code coverage is broken. Meaningful tests actually check functionality, giving you the confidence needed to commit. Spend fewer hours writing questionable test cases, and more time developing useful features for your users. By analyzing your code, docstring, and comments, Qodo suggests tests as you type. All you have to do is add them to your suite. Qodo is focused on code integrity: generating tests that help you understand how your code behaves; finding edge cases and suspicious behaviors; and making your code more robust.

13 Ratings

Starting Price: $19/user/month

View Software

Spendkey

Spendkey Limited

Spendkey stands out as a Gen AI-infused spend management platform, designed to convert complex data and documentation into actionable, profit-oriented strategies. By equipping teams with critical insights and market intelligence, Spendkey simplifies the intricacies of spend and contract management. At the heart of Spendkey's comprehensive feature set is CASSIAN, an intuitive AI Co-Pilot, adept at handling sophisticated cognitive tasks such as supplier negotiations by analysing vast amounts of data to recommend optimal negotiation strategies and contract terms. This capability exemplifies the practical application of AI in streamlining and enhancing decision-making processes in spend management.

3 Ratings

Starting Price: £ 21000

View Software

Tabnine

Tabnine is the AI coding assistant that you control — helping development teams of every size use AI to accelerate and simplify the software development process without sacrificing privacy, security, or compliance. Tabnine boosts engineering velocity, code quality, and developer happiness by automating the coding workflow through AI tools customized to your team. Tabnine is trusted by more than 1,000,000 developers across thousands of organizations. Tabnine offers best-in-class AI code completion and an AI-powered chat and supports numerous use cases such as code generation, explanation of code, creating unit tests, generating documentation, debugging code, refactoring and maintaining code. Tabnine is integrated with all the major IDEs such as VS Code, JetBrains, Visual Studio, Eclipse. It supports over 80 programming languages and frameworks including JavaScript, Python, Java, PHP, Go, and more.

2 Ratings

Starting Price: $12 per user per month

View Software

CodeGPT

Discover the AI Pair Programming extension for VSCode, Create your own AI Copilots with the Playground and Unleash new AI Apps with the API. Unlock the Power of Your Own AI Agents: Integrate Personalized Context and Knowledge Across all Coding Languages. Easily Train Your AI Copilot with Your Own Files on the Playground. Create and Share a Copilot in Just 5 Minutes, or Achieve Custom AI Copilot Solutions Seamlessly Through the API A always free extension for VS Code that boost coding abilities using chat assistant and code completion. Simply download the extension, add your own API key and start AI-coding for free. Enhanced solution that allows AI agents creation with specific context information, so you can design your own AI copilots and integrate it wherever you want! API connection to develop AI-powered apps effortlessly handling all the complexities of fine-tuning LLMs so you can focus on creating without the technical issues.

2 Ratings

Starting Price: Free

View Software

GitHub Copilot

GitHub

Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor. Trained on billions of lines of public code, GitHub Copilot puts the knowledge you need at your fingertips, saving you time and helping you stay focused. GitHub Copilot is available today as a Visual Studio Code extension. It works wherever Visual Studio Code works — on your machine or in the cloud on GitHub Codespaces. And it’s fast enough to use as you type. GitHub Copilot works with a broad set of frameworks and languages. The technical preview does especially well for Python, JavaScript, TypeScript, Ruby, and Go, but it understands dozens of languages and can help you find your way around almost anything. With GitHub Copilot, you’re always in charge. You can cycle through alternative suggestions, choose which to accept or reject, and manually edit suggested code. GitHub Copilot adapts to the edits you make, matching your coding style.

7 Ratings

Starting Price: $10 per month

View Software

Gemini Code Assist

Google

Increase software development and delivery velocity using generative AI assistance, with enterprise security and privacy protection. Gemini Code Assist completes your code as you write, and generates whole code blocks or functions on demand. Code assistance is available in many popular IDEs, such as Visual Studio Code, JetBrains IDEs (IntelliJ, PyCharm, GoLand, WebStorm, and more), Cloud Workstations, Cloud Shell Editor, and supports 20+ programming languages, including Java, JavaScript, Python, C, C++, Go, PHP, and SQL. Through a natural language chat interface, you can quickly chat with Gemini Code Assist to get answers to your coding questions, or receive guidance on coding best practices. Chat is available in all supported IDEs. Enterprises can customize Gemini Code Assist using their organization’s private codebases and knowledge sources so that Gemini Code Assist can offer more tailored assistance. Gemini Code Assist enables large-scale changes to entire codebases.

1 Rating

Starting Price: $19 per month

View Software

Cohere

Cohere AI

Cohere is an enterprise AI platform that enables developers and businesses to build powerful language-based applications. Specializing in large language models (LLMs), Cohere provides solutions for text generation, summarization, and semantic search. Their model offerings include the Command family for high-performance language tasks and Aya Expanse for multilingual applications across 23 languages. Focused on security and customization, Cohere allows flexible deployment across major cloud providers, private cloud environments, or on-premises setups to meet diverse enterprise needs. The company collaborates with industry leaders like Oracle and Salesforce to integrate generative AI into business applications, improving automation and customer engagement. Additionally, Cohere For AI, their research lab, advances machine learning through open-source projects and a global research community.

1 Rating

Starting Price: Free

View Software

K.Explorer

Morphis Tech

A state-of-the-art AI that builds better software, cheaper and faster. K.Explorer is an AI powered Code Assistant trained on many millions of private corporate lines of code, for specific domains, and on billions of public and open-source lines of code for general purposes. Its code auto-completion features suggest code completions and entire function bodies as you type or as you search the engine for help. To make development faster and more agile it even supports Natural Language for programmers to get guidance while telling a text story about the code they want to write.

1 Rating

Starting Price: Free

View Software

BLACKBOX AI

BLACKBOX.AI is a Coding LLM designed to transform the way we build software. By building BLACKBOX.AI, our goal is to: - Accelerate the pace of innovation within companies by making engineers 10X faster in building and releasing products - Accelerate the growth in software engineers around the world and 10X the number of engineers from ~100M to 1B Capabilities: 1. Natural Language to Code 2. Real-Time Knowledge 3. Code Completion 4. VISION 5. Code Commenting 6. Commit Message Generation 7. Chat with your Code Files BLACKBOX is built to answer coding questions and assist you write code faster. Whether you are fixing a bug, building a new feature or refactoring your code, ask BLACKBOX to help. BLACKBOX has real-time knowledge of the world, making it able to answer questions about recent events, technological breakthroughs, product releases, API documentations & more BLACKBOX integrates directly with VSCode to automatically suggests the next lines of code.

1 Rating

Starting Price: Free

View Software

Cursor

Anysphere

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI. One click to migrate all your favorite vscode extensions with local options for security-critical work. Cursor is a fork of VSCode. Import all your extensions, themes, and keybindings in one-click. With local mode, we store none of your data in our servers or logs. Avoid looking for code with answers tailored to your repository. Save time hunting for a the place to start a change or the right method to call. Refer directly to documentation, code definitions, and files. Change an entire method or class with a single prompt. Generate code from scratch with a simple instruction. Cursor can scan your code for bugs and quickly help you fix problems.

1 Rating

Starting Price: $20 per month

View Software

Microsoft Copilot

Microsoft

Meet your everyday AI companion for work and life. Work smarter, be more productive, boost creativity, and stay connected to the people and things in your life with Copilot—an AI companion that works everywhere you do and intelligently adapts to your needs. Copilot empowers you with smarter ways to be more productive, creative, and connected to the people and things that matter to you. Find just what you’re looking for. Get relevant answers to your questions. And shop online knowing you’ve gotten the best deal. Get answers to your questions, inspiration for your projects, and solutions for your to-do list. Transform your ideas effortlessly. Creating beautiful images and polished drafts is easy and fun. Whatever you’re into—browsing the web, searching for answers, exploring your creative potential, or coming up with more useful content, Copilot can help you uncover new possibilities.

1 Rating

Starting Price: Free

View Software

EarnBetter

From your resume through your interviews, we've got you covered. Upload your current resume to get started. 100% free. Upload your existing resume so our AI can reformat and rewrite a professional version of your resume in minutes. We use AI to scan through millions of jobs each day and provide you with your top matches based on your profile and preferences. Our AI can customize a resume and cover letter for each job on EarnBetter for free in seconds to help you stand out from the pack. EarnBetter's proprietary AI takes you to the top of the pile by improving your resume with professionally written experiences, and a clean look and feel that is legible by the ATS. From there, we leverage AI to search through millions of jobs instantly to find the job matches that you are a fit for based on your profile and preferences.

1 Rating

View Software

Younet

Younet AI

Today, we are bringing the power of next-generation AI to work. It combines the power of large language models(LLMs) with your data and turns your words into the most powerful productivity tool on the planet to expedite your work. Also works on any web-based platform with Browser Extension (Chrome or Edge). Scalable artificial intelligence solution that delivers game-changing results for your team. Seamless integration in any business via an intuitive user interface. Create a custom AI model with knowledge of your expertise. With the help of our intuitive algorithms, you may convert knowledge to digital form in AI to help you with intellectual tasks. Safely automate your intellectual daily tasks. Everything you know becomes accessible by communicating with your personalized AI model.

1 Rating

View Software

Replit

Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup. Start coding with your favorite language on any platform, OS, and device. Invite your friends, teammates, and colleagues right into your code with Google-docs like editing. Import, run, and collaborate on millions of GitHub repos with 0 manual setup. From Python, to C++, to HTML and CSS, stay in one platform to learn and code in any language you want. The second you create a new repl, it's instantly live and sharable with the world. Learn how to code from 3 million+ passionate programmers, technologists, creatives, and learners of all kinds. Make your team more productive with interactive docs, real-time collaboration, and 0-hassle remote interviewing. Create apps programatically, spin up bots and customize the IDE with plugins to fit your needs.

2 Ratings

Starting Price: $7 per month

View Software

Otter.ai

Otter is where conversations live Generate rich notes for meetings, interviews, lectures, and other important voice conversations with Otter, your AI-powered assistant. Organizations who have the Otter advantage. Teams big and small trust Otter to transcribe their important conversations. Our shiny new release, Otter 2.0, adds more functionality to improve collaboration and productivity. The Teams plan includes capabilities designed especially for small and medium businesses and teams in larger enterprises. Record and review in real time. Search, play, edit, organize, and share your conversations from any device. Record conversations using Otter on your phone or web browser. Import or sync recordings from other services. Integrate with Zoom. Get real-time streaming transcripts and, within minutes, rich, searchable notes with text, audio, images, speaker ID, and key phrases. Share or export voice notes to inform others and get on the same page.

2 Ratings

Starting Price: $8.33 per month

View Software

Microsoft Copilot Studio

Microsoft

Microsoft Copilot Studio is a comprehensive platform that enables users to create and manage AI-driven agents tailored to specific business needs. Utilizing low-code and generative AI capabilities, it allows for the design of agents that can access internal knowledge bases, execute actions through a wide array of data connectors, and operate autonomously to enhance productivity. These agents can be seamlessly deployed across various channels, including Microsoft 365 applications, internal websites, and mobile apps, ensuring integration into existing workflows. Copilot Studio also offers robust governance features, providing IT departments with centralized control over usage, analytics, and security policies.

Starting Price: $200 per month

View Software

Pieces

Pieces for Developers

Pieces™ is an on-device AI coding assistant that boosts developer productivity by helping you solve complex development tasks through a contextual understanding of your entire workflow. Leverage real-time context from all of your tools to ask questions about your daily interactions, capture important information, explain concepts or entire repositories, and generate ready-to-use code. Pieces works right in-flow, seamlessly integrating with your favorite tools to streamline, understand, and elevate your coding processes.

Starting Price: $0

View Software

Omind

Provide proactive engagement, personalize user interaction, automate conversation & create user journeys over business messaging channels. Show your customers that you care for them, empower your team to communicate across multiple channels seamlessly and create a great first & lasting impression. Now build conversational AI bots swiftly and deploy within no time with our no-code builder. Add a custom function & datasets for complex operation. Get an easy to use WhatsApp campaign screen that allows you send WhatsApp notifications like a pro. Quick and easy way to visualize your data on our dashboards. Get whatever information you want while keeping up with the latest trends in your industry with just a click. We take data security very seriously. With data centers based out of EU, US & SEA and secured with AES 256 bit security & in-transit encryption, your data is safe and secure.

Starting Price: $99 per month

View Software

Cardina

Caldera Labs

Cardina is a customer engagement platform designed to enhance support and sales interactions by enabling real-time visual guidance on customers' screens without requiring downloads or meeting links. Its co-browsing technology allows agents to see, draw on, and control customers' screens, facilitating faster issue resolution and improved customer satisfaction. Cardina integrates seamlessly with existing tools, offering features like session recording, data masking for security, and compatibility across various devices and web technologies. The platform is trusted by leading customer experience teams and has been shown to reduce handle times by up to 41% and boost first-contact resolutions by 47%. Cardina offers flexible pricing plans to cater to businesses of all sizes, from startups to enterprises.

Starting Price: $69 per month

View Software

mutable.ai

MutableAI

Build fast with production quality using AI. Create high quality code effortlessly. Prototype with AI Autocomplete. Transform to production quality code with AI. Minimize time filling in boilerplate and on Stack OverFlow with our specialized neural networks. Refactor, document, and add types. Give instructions to the AI directly to modify your code. Hate writing tests? We have you covered. Automatically generate unit tests with AI and metaprogramming. We believe the future of software development is AI accelerated. Our long term mission is to enable programmers to move at the speed of thought. We also believe the recent advances in AI will unlock new ways of programming beyond the pre AI accelerated stack that won't look like a traditional IDE or version control system.

Starting Price: $15 per seat per month

View Software

Microsoft 365 Copilot

Microsoft

Introducing Microsoft 365 Copilot — your copilot for work. It combines the power of large language models (LLMs) with your data in the Microsoft Graph and the Microsoft 365 apps to turn your words into the most powerful productivity tool on the planet. Copilot is integrated into Microsoft 365 in two ways. It works alongside you, embedded in the Microsoft 365 apps you use every day — Word, Excel, PowerPoint, Outlook, Teams and more — to unleash creativity, unlock productivity and uplevel skills. Today we’re also announcing an entirely new experience: Business Chat. Business Chat works across the LLM, the Microsoft 365 apps, and your data — your calendar, emails, chats, documents, meetings and contacts — to do things you’ve never been able to do before. You can give it natural language prompts like “Tell my team how we updated the product strategy,” and it will generate a status update based on the morning’s meetings, emails and chat threads.

Starting Price: $30/month

View Software

writeGPT

WriteGPT is a free AI copilot and GPT web extension that helps professionals, marketers, and entrepreneurs supercharge their productivity and helps you write, adapt, summarize, memorize, and harness any digital task or document anywhere on the internet WriteGPT is expanding OpenAI’s GPT capabilities for any of your favorite websites: Gmail, Linkedin, Facebook, Github, Medium, Youtube, and Google Search, saving you 10 hours per week. Additionally, writeGPT acts like a prompt engineering assistant to enable effective prompt writing. Our assisted prompt engineering framework bridges your needs, context, goals, product, audience, style (and many more) with the true power of ChatGPT. Here are some of the most popular benefits 🌀 🤖Analyze documents more efficiently with the ChatPDF function 🤖Use GPT-4 / GPT-3 / ChatGPT directly from any website 🤖Compose compelling & personalized content for marketing, sales, or any operational tasks

Starting Price: $19.99 per month

View Software

Pointer

Pointer is your AI copilot, working directly within Google Docs to offer smart, real-time edits. Say goodbye to manual copy-pasting from ChatGPT and fixing broken text formatting. Enjoy efficient, polished suggestions that you can easily approve. Imagine having an intern who follows your exact instructions, clicking around and making suggestions right within Google Docs. That's what Pointer AI does! It's not just a chat interface—it actively types out suggestions for you to approve, complete with insightful comments that explain the reasoning behind each change. Inspired by Claude's "Computer Use," Pointer AI is specifically built for Google Docs, eliminating the hassle of copying from ChatGPT and fixing formatting issues. You'll be amazed at how smoothly it integrates your feedback, making your documents shine 5x faster. For me, watching Pointer AI in action is like witnessing magic—seeing your ideas come to life with remarkable precision and efficiency.

Starting Price: $19.95 per month

View Software

Microsoft 365 Copilot Chat

Microsoft

Microsoft has introduced Microsoft 365 Copilot Chat, a free AI-driven chat service designed to enhance workplace productivity. Powered by OpenAI's GPT-4, Copilot Chat allows users to create and utilize AI agents for tasks such as automating processes and managing email inboxes. These agents, previously exclusive to the full Microsoft 365 Copilot subscription, can now be accessed through Copilot Chat. Users can develop custom agents using Copilot Studio, with usage priced on a pay-as-you-go basis or through consumption packs. Agent interactions are measured in messages, with costs ranging from 1 cent for simple responses to 30 cents for accessing work data via the Microsoft Graph. This initiative aims to familiarize businesses with AI tools, encouraging adoption of the comprehensive Microsoft 365 Copilot suite, which remains available at $30 per user per month.

Starting Price: Free

View Software

Prophecy

Prophecy enables many more users - including visual ETL developers and Data Analysts. All you need to do is point-and-click and write a few SQL expressions to create your pipelines. As you use the Low-Code designer to build your workflows - you are developing high quality, readable code for Spark and Airflow that is committed to your Git. Prophecy gives you a gem builder - for you to quickly develop and rollout your own Frameworks. Examples are Data Quality, Encryption, new Sources and Targets that extend the built-in ones. Prophecy provides best practices and infrastructure as managed services – making your life and operations simple! With Prophecy, your workflows are high performance and use scale-out performance & scalability of the cloud.

Starting Price: $299 per month

View Software

The Mango Jelly

The Mango Jelly is an AI Copilot and Collaborative Workspace for marketing teams. We empower marketers to talk to their data and extract powerful and actionable insights from complex, siloed and fragmented data across multiple product integrations. They can achieve it in minutes instead of weeks simply with Natural Language with no technical/data science expertise required.

Starting Price: $79/month/user

View Software

TextCortex

TextCortex AI

Cut down costs of outsourcing content up to 18x & make writing process faster using trained artificial intelligence models. 250.000 words are created using TextCortex every single day. TextCortex combines advanced NLG algorithms with proven marketing practices to create the best AI writing software for copywriting. Our AI algorithms, trained with billions of lines of text, help marketers, e-commerce entrepreneurs and copywriters do more with their content every day. Our AI writers learned how to write from more than 3 billion sentences. They have done their homework and their creations is just like human creation, they are very close to being completely unique. We specialize and train our AI writers on various different topics, formats and text structures. To understand your instructions, they have been trained on more than 3 billion sentences.

Starting Price: $19.99 per month

View Software

Compare the Top AI Copilots in Japan as of February 2025

What are AI Copilots in Japan?