AI Code Completion AI Tools

AI coding assistant built into IntelliJ IDEA, PyCharm, WebStorm, and other JetBrains IDEs.

JetBrains AI Assistant is an AI coding assistant integrated directly into JetBrains IDEs, offering code completion, code explanation, refactoring suggestions, and unit test generation with deep awareness of the surrounding project context. It also generates commit messages and helps with code review.

• Deep project-context-aware code completion
• Refactoring and unit test generation
• Commit message generation
• Native integration across JetBrains IDEs

Low-latency AI code completion tool built for very large context windows.

Supermaven focuses on fast, low-latency inline code completion, using a large context window to understand more of a codebase than typical autocomplete tools.

• Very low completion latency
• Large-context code understanding
• VS Code and JetBrains plugins

AI pair-programmer that suggests code completions and chats inside your editor.

GitHub Copilot is Microsoft/GitHub's AI coding assistant, integrated into VS Code, JetBrains IDEs, Neovim, and other editors. It offers inline code completions, an in-editor chat for explaining/refactoring code, and an increasingly agentic "Workspace" mode for multi-file tasks — used by over 15 million developers.

• Free tier (2,000 completions + 50 chat messages/month) available to every GitHub account
• Pro ($10/mo) gives unlimited code completions plus a monthly premium-request allowance
• Free for verified students, teachers, and maintainers of popular open-source projects
• Business ($19/user/mo) and Enterprise ($39/user/mo) add org-wide policy controls and code review
• Since June 2026, premium/agentic usage is metered via "GitHub AI Credits" rather than flat quotas

Privacy-first AI code completion and chat assistant with self-hosted and on-prem options.

Tabnine is an AI coding assistant built around one core promise: your code never has to leave your infrastructure. It provides context-aware autocomplete, a chat assistant, and (on higher tiers) agentic workflows across 30+ languages and all major IDEs. In 2026 it repositioned toward teams and enterprises, emphasizing self-hosted and air-gapped deployments for regulated industries.

• Self-hosted / on-premises / air-gapped deployment options
• Works inside existing IDEs — VS Code, JetBrains, Vim, and more
• Zero code retention and SOC 2 / ISO 27001 / GDPR-aligned options
• Tabnine Chat for in-IDE Q&A and custom models trained on private code
• Workflow AI agents on the Agentic Platform tier
• Paid plans only — individual free tier limited to basic completions