Best AI Coding Assistants for IntelliJ IDEA

Introducing your AI coding companion: GitHub Copilot, which provides whole line or entire function suggestions directly within your coding environment. Drawing from billions of lines of publicly available code, GitHub Copilot ensures that essential knowledge is always at your disposal, allowing you to save valuable time and maintain your concentration. Currently accessible as an extension for Visual Studio Code, it operates seamlessly both on your local machine and in the cloud via GitHub Codespaces. Its responsiveness allows you to receive suggestions in real-time as you type. Supporting a wide array of frameworks and programming languages, the technical preview excels particularly in Python, JavaScript, TypeScript, Ruby, and Go, while also having the capability to assist with numerous other languages. With GitHub Copilot, you maintain complete control over the coding process, as you can sift through various suggestions, decide which ones to implement or dismiss, and make manual adjustments to the proposed code. Additionally, GitHub Copilot fine-tunes its recommendations based on your coding style, ensuring a more personalized programming experience. This innovative tool truly empowers developers by enhancing productivity and creativity in their coding endeavors. GitHub Copilot Coding Agent simplifies the software development process by automating low-to-medium complexity tasks such as bug fixes, feature additions, and code refactoring. Integrated directly into GitHub, the agent operates in the background when issues are assigned, using GitHub Actions to run a fully customizable development environment.

Zencoder is a cutting-edge platform that harnesses the capabilities of AI coding agents to enable developers to expedite their product delivery. By utilizing embedded AI agents, Zencoder enhances the process of code generation through comprehensive syntactic and semantic analysis of both your repository and the output code. This innovative approach ensures that our AI coding agents continuously refine the results, allowing you to maintain awareness and expertly navigate the challenges of software development. Experience the transformative potential of AI-enhanced code generation, as Zencoder seamlessly incorporates context-sensitive code into your projects, significantly speeding up your development workflow while maintaining accuracy. With Zencoder, you can interact with a smart coding companion that offers immediate support, insightful responses, and tailored solutions that cater to your specific coding requirements, making the development process smoother and more efficient. This combination of intelligent assistance and advanced technology not only elevates your coding experience but also empowers you to focus more on creativity and innovation.

Augment Code is an AI agent built to enhance the coding experience for software engineers working with large and complex codebases. It integrates effortlessly into IDEs like Visual Studio Code, IntelliJ IDEA, Node, and Vim, offering a suite of tools for SDK migration, code refactoring, and code documentation. By leveraging machine learning, Augment Code automatically adapts to a developer’s style and memory, improving the quality of code generation and ensuring consistency across multiple repos. The platform is compatible with over 100 native and MCP tools, enabling engineers to debug, explain, and refine code in their familiar environments without needing to switch tools. Augment Code's deep integration with popular collaboration platforms like GitHub and Slack further streamlines workflows, making it easier for teams to collaborate and maintain high-quality code. Trusted by leading software teams, Augment Code helps developers write code like senior engineers, boosting productivity and reducing the complexity of large projects.

The JetBrains AI Assistant integrates your integrated development environment (IDE) with both third-party and proprietary large language models (LLMs) that are tailored for specific functionalities. This integration allows the AI Assistant to deliver accurate and context-sensitive support, assisting with tasks such as generating code snippets, completing intricate code structures, and developing automated tests efficiently. We prioritize the security of your data and code! JetBrains AI Assistant guarantees that your code snippets remain confidential and are neither stored nor shared, irrespective of whether they come from public repositories, private repositories, or local files. Adhering to the JetBrains AI Terms of Service is fundamental to our practices, ensuring that neither we nor our affiliated service providers utilize your data or code for the purpose of training any generative AI models. Additionally, this commitment to privacy and data integrity fosters a trustworthy environment for developers.

GoCodeo is a comprehensive AI platform for developers that accelerates coding, testing, and debugging processes. The platform integrates with VS Code to offer real-time assistance, from generating code snippets to automatically creating unit tests. GoCodeo’s AI-driven tools also provide debugging insights, enabling developers to identify and fix issues faster. With support for multiple programming languages and frameworks, GoCodeo empowers developers to write high-quality, production-ready code with less effort, streamlining development cycles and enhancing efficiency across projects.

Goose, also referred to as codename goose, is an open-source AI agent that operates locally on machines, designed to facilitate the automation of engineering tasks within a terminal or integrated development environment (IDE). By efficiently performing functions such as code creation, debugging, and deployment, it allows developers to shift their focus towards more complex problem-solving activities. Its flexible architecture supports customization with various large language models (LLMs) and the integration of external APIs, which broadens its functionality to meet the unique demands of different projects. By taking on intricate tasks autonomously, Goose simplifies the development workflow, thereby enhancing overall productivity and minimizing the need for manual intervention. Users have expressed appreciation for Goose's capabilities in managing responsibilities like dependency updates, test execution, and code migration automation, underscoring its usefulness in practical scenarios. Furthermore, as the landscape of software development evolves, tools like Goose are becoming increasingly vital for maintaining efficiency in a fast-paced environment.

Refact.ai is an advanced AI-powered assistant that integrates directly into your IDE, offering intelligent code completion, real-time code suggestions, and automatic refactoring to streamline the coding process. By using the AI model trained on your codebase, Refact.ai adapts to your team's style, providing highly relevant recommendations to enhance productivity. Developers can also fine-tune the assistant to better suit their unique requirements, making it a powerful tool for personalized coding assistance. With support for all major IDEs and secure on-premise deployment, Refact.ai empowers developers to increase code quality, reduce time spent on manual tasks, and achieve faster results.

Accelerate the development of highly secure software with the assistance of AI throughout every phase of the software development process. GitLab Duo serves as an AI-enhanced companion that is seamlessly woven into the GitLab ecosystem, aiming to boost productivity and foster teamwork in software development. It offers smart code recommendations, aids in code refactoring and debugging, and simplifies workflows by automating mundane tasks. Additionally, GitLab Duo allows for natural language inquiries related to project management and development insights, granting developers a more intuitive way to engage with their repositories. With integration into popular IDEs such as JetBrains and Neovim, GitLab Duo provides uninterrupted support within the environments that developers favor. Through the fusion of AI-driven productivity and GitLab’s comprehensive DevSecOps capabilities, GitLab Duo empowers teams to produce superior software at a quicker pace while enhancing collaborative efforts. This innovative tool ultimately transforms the way teams approach software development.

Introducing an advanced generative AI assistant designed specifically for software development tasks. Amazon Q agents enhance efficiency throughout the entire software development lifecycle by autonomously managing a variety of responsibilities, from feature implementation, documentation, testing, and code review to refactoring and executing software upgrades. With Amazon Q Developer, the entire development process is simplified. This expert tool is well-versed in AWS, providing support for optimizing cloud expenses and resources, offering advice on architectural best practices, investigating operational issues, and addressing networking problems. Additionally, Amazon Q Developer agents significantly expedite the transformation of large-scale enterprise workloads, including tasks such as transitioning .NET applications from Windows to Linux, modernizing mainframe applications, migrating VMware workloads, and upgrading Java. By streamlining these processes, Amazon Q Developer ultimately helps organizations reduce costs and improve overall productivity.

Latta AI is a cutting-edge platform aimed at optimizing the software development workflow through automated bug detection and resolution. By capturing user sessions and employing AI-based solutions, Latta AI empowers developers, project managers, and testers to concentrate on creating new features, which ultimately enhances productivity and speeds up release timelines. The platform is designed to integrate effortlessly with widely-used version control systems such as GitHub and GitLab while ensuring robust security measures to safeguard code integrity and confidentiality. In addition, Latta AI provides a plugin for JetBrains IDEs, which permits developers to utilize its bug-fixing capabilities directly within their coding environment. This seamless integration allows for rapid identification and resolution of problems without having to exit the IDE. Furthermore, Latta AI's objective is to cut down the time developers dedicate to debugging by as much as 40%, significantly improving overall efficiency and enabling teams to prioritize innovation and creativity in their projects. By minimizing the burden of bug fixing, Latta AI plays a crucial role in transforming the software development landscape.

Fynix serves as an AI-driven platform aimed at enhancing software development efficiency by providing smart coding assistance and agent-based code reviews. This tool seamlessly integrates with widely used IDEs such as VS Code, offering features like context-aware autocomplete, natural language inputs for code corrections and translations, along with automatic visualizations of code flow. The Code Assistant feature of Fynix enables developers to produce cleaner and more efficient code at an accelerated pace, and the forthcoming Code Quality Agent promises to streamline bug detection while upholding coding standards. Supporting a variety of programming languages and frameworks, and compatible with tools like Jira, Fynix proves to be a flexible solution for fostering improved coding practices and team collaboration. As developers strive for excellence in their coding endeavors, Fynix stands out as an essential ally in the software development landscape.

Codespell.ai, an AI-powered coding tool, improves code quality and increases productivity. Its main feature, Design Studio automates project set-up by generating starter-kit codebases and structured designs.

GPT-4.1 represents a significant upgrade in generative AI, with notable advancements in coding, instruction adherence, and handling long contexts. This model supports up to 1 million tokens of context, allowing it to tackle complex, multi-step tasks across various domains. GPT-4.1 outperforms earlier models in key benchmarks, particularly in coding accuracy, and is designed to streamline workflows for developers and businesses by improving task completion speed and reliability.

Engage in discussions about your codebase while allowing your AI coding assistant to make updates across numerous files directly within your preferred IDE! With the capability to automatically include all files currently opened in your editor, you can leverage up to 128,000 tokens within the AI's context memory. The AI will handle the coding tasks, and you can either approve the multi-file patch, select parts of it, or request adjustments as needed. Codebuddy is designed to scan your entire repository and create a vector database, enabling it to choose appropriate files for you or provide insights about your codebase, especially if you're not entirely familiar with it. This AI coding assistant possesses an in-depth understanding of your repository, allowing you to create new files or modify several existing ones with a single command. Codebuddy will automatically insert code in a format that resembles a unified patch (diff), enhancing your coding experience with unparalleled multi-file support. By incorporating these features, you can significantly streamline your coding process and improve overall productivity.

Lingma serves as Alibaba Cloud's AI-driven coding assistant, aimed at enhancing the efficiency of software development processes. Featuring capabilities such as line and function-level real-time code completion, natural language-based code generation, and smart troubleshooting, it allows developers to articulate their requirements in simple language, resulting in automatically generated code within the editor. Supporting an extensive array of over 200 programming languages, Lingma also offers in-depth code explanations accompanied by visual flow charts. Furthermore, it can assess codebases to produce unit tests, automatically compile and execute code, and rectify issues to boost test coverage. Users can even upload images for contextual analysis, which aids in generating code or delivering bug fixes based on specified requirements. For corporate users, Lingma seamlessly integrates with private data sources, such as documents and repositories, to refine its model outputs and ensure they adhere to company standards, thereby maximizing its utility in professional environments. Additionally, this integration fosters a collaborative atmosphere for development teams, promoting a more streamlined workflow across projects.

Mistral Code is a cutting-edge AI coding assistant tailored for enterprise software engineering teams that need frontier-grade AI capabilities combined with security, compliance, and full IT control. Building on the proven open-source Continue project, Mistral Code delivers a vertically integrated solution that includes state-of-the-art models like Codestral, Codestral Embed, Devstral, and Mistral Medium for comprehensive coding assistance—from autocomplete to agentic coding and chat support. It supports local, cloud, and serverless deployments, allowing enterprises to choose how and where to run AI-powered coding workflows while ensuring all code and data remain within corporate boundaries. Addressing key enterprise pain points, Mistral Code offers deep customization, broad task automation beyond simple suggestions, and unified SLAs across models, plugins, and infrastructure. The platform is capable of reasoning over code files, Git diffs, terminal output, and issues, enabling engineers to complete fully scoped development tasks with configurable approval workflows to keep senior engineers in control. Enterprises such as Spain’s Abanca, France’s SNCF, and global integrator Capgemini rely on Mistral Code to boost developer productivity while maintaining compliance in regulated industries. The system includes a rich admin console with granular platform controls, seat management, and detailed usage analytics for IT managers. Mistral Code is currently in private beta for JetBrains IDEs and VSCode, with general availability expected soon.