OneCompiler

OneCompiler is an online code editor and compiler that supports over 110 programming languages and includes integrated AI coding agents.

OneCompiler allows users to write, run, and share code directly in a web browser across more than 110 programming languages and databases. It features an integrated AI agent capable of reading the workspace, editing files, creating new files, and performing deletions to complete coding instructions. The agent offers checkpoint-based rollbacks, letting users accept or reject individual changes. Users can interact with the agent via microphone, screenshots, or file attachments, utilizing models from providers like OpenAI, Anthropic, Google, DeepSeek, and xAI. The platform also offers API access and iFrame embedding to integrate code execution capabilities into third-party websites or backend applications.

OneCompiler at a glance

Best for: Software engineer, Student
Runs on: Web, API
Pricing: Free plan includes 20 AI credits per day; Plus plan adds unlimited AI credits; Enterprise plan available for teams.
Released: August 2018
Category: AI coding tool
Website: onecompiler.com

Key features

Support for over 110 programming languages and databases
AI coding agent with workspace file editing and creation
Checkpoint-based rollback system for code changes
Voice, screenshot, and file attachment input support
API for backend code execution
iFrame embedding for editor and coding challenges

Use it for

Writing and running code directly in the browser
Integrating code execution capabilities into websites
Executing code via API from backend applications
Collaborative coding with AI assistance

Companions

Tools that articles about OneCompiler recommend using with it, each with its job.

Context7 — Provides up-to-date documentation for AI agents and code editors.
Ollama — Run local models at zero marginal cost, with code kept on your machine.
OpenRouter — Access over 500 models and 80 providers through one unified API.
Daytona — Runs sessions in isolated sandboxes synced to git branches.
Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps
Oh My OpenCode Slim — Lightweight multi-agent orchestration and background tasks.

Alternatives to OneCompiler

OpenCode — Works with 75+ model providers, local models, and existing subscriptions
Bodega One — It runs locally without forced subscriptions and supports any LLM provider.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Freebuff — Access multiple coding AI models for free without subscriptions.
Refact.ai — Open-source, self-hosted, and integrates directly into your IDE.
TRAE — It features an autonomous coding agent that drives the entire development process.
Dirac — Executes complex coding tasks efficiently with hash-anchored edits and low token overhead.
OpenSandbox — Provides isolated environments with multi-language SDKs and lifecycle management.
Weft — It enables safe parallel coding agent work without file locks.
Tencent CodeBuddy — Offers multi-model support and context-aware coding assistance across many IDEs.
CodeSight — Reduces AI token usage significantly and maps projects instantly.
SmallCode — Runs fully local with budget-managed context and a forgiving parser for small models.

All OneCompiler alternatives