OneCompiler

OneCompiler is an online environment for writing, running, and sharing code, available on the web and Android. It supports more than 60 programming languages, alongside web technologies and databases such as MySQL, MongoDB, and PostgreSQL. The free plan includes unlimited code executions and 20 AI credits per day. Plus, Pro, and Ultra list unlimited AI credits, advanced challenge options, and Studio access, but their prices are not shown. OneCompiler Studio runs Visual Studio Code in a browser with a Linux container, terminal, package manager, debugger, and persistent workspaces; supported projects can be deployed to a live URL and shared with one link. The service also offers code execution APIs and embeddable editor, challenge, Studio, and AI interview capabilities. Its LMS integration uses a JWT token and requires a user’s email and name. The company describes use by LLM companies, colleges, EdTech providers, and interview companies, and says it helps over 12.8 million developers. API plans start at $5 a month; higher listed tiers cost up to $50 a month.

OneCompiler combines a free coding environment with Studio, deployment, and API options. Check plan details if you need paid Studio access or API capacity beyond the listed tiers.

OneCompiler may suit developers who want to write and run code online, or organizations embedding coding tools into learning and interview workflows. It also offers a browser-based Studio for supported projects.

OneCompiler is an online workspace for writing, running and sharing code, suited to learners, developers and organizations that need browser-based execution or embeddable coding tools. Its free execution allowance is unusually open-ended, but Studio and unlimited AI credits require a plan with custom pricing.

Overview

The product covers quick experiments as well as fuller development workflows. OneCompiler says it supports more than 60 programming languages, alongside web technologies and databases including MySQL, MongoDB and PostgreSQL, and serves over 12.8 million developers worldwide. Private projects, public sharing and real-time collaboration make it useful for both individual work and shared exercises.

OneCompiler says it began in 2018; One Compiler Private Limited was incorporated in 2020 and is headquartered in Hyderabad, Telangana, India. Its privacy policy describes CCPA and GDPR rights, and users can delete their data or account through settings or by email request.

Key features

Execution and browser-based Studio

The Free plan allows unlimited code executions, a practical advantage for repeated experiments without tracking a run quota. Studio is a more substantial environment: it runs Visual Studio Code in a browser with a Linux container, terminal, package manager, debugger and persistent workspaces. That makes OneCompiler relevant to projects that outgrow short code snippets, though Studio access requires Plus, Pro or Ultra.

Sharing, deployment and integration

Supported Studio projects can be deployed to a live URL and shared with one link. Full-stack runtime scope, custom domains and deployment support extend its usefulness for projects that need a public destination, while real-time collaboration helps when more than one person is working together.

Code execution APIs and embeddable editor, challenges, Studio and AI interview capabilities let other services incorporate coding workflows. The LMS integration uses a JWT token to create or sign in a user and requires email and name fields. OneCompiler describes use by LLM companies, colleges, EdTech providers and interview companies, so this side of the product is aimed at organizations integrating coding into their own services rather than casual solo use.

Pricing

The consumer plans distinguish execution from AI and Studio access. Free costs nothing, billed Free forever, and includes unlimited code executions plus 20 AI credits per day. That is a strong starting point for coding practice and execution, but daily AI credits are capped and the plan does not include Studio.

Plus, Pro and Ultra each include everything in Free, unlimited AI credits, advanced challenge options and Studio access. Their prices are custom pricing. Since the listed inclusions are identical, buyers should confirm the differences between tiers before choosing one; these plans are not a transparent price ladder.

Enterprise has custom pricing and is described as supporting 1,000 users. It is the listed option for a large deployment, but organizations should confirm the terms that matter to their rollout before committing.

The API plans set monthly call allowances and include code execution and email support:

P1 fits a modest integration, while P2 through P4 raise capacity for services with greater monthly demand. More/Custom API offers unlimited calls with email, Slack or phone support at custom pricing. Unlike the fixed API tiers, it avoids a stated monthly call ceiling, but requires a direct pricing conversation.

OneCompiler says its Organizations offering is being retired: new organizations cannot be created and no new features are planned. Teams planning a new setup should not rely on that product path.

Platforms

OneCompiler is available on the web and Android. Browser-based Studio and deployment support make the web version central to its broader development workflow.

Who it's for

Free is a sensible fit for learners and developers who want repeated code execution without a per-run cap. Plus, Pro or Ultra better suit users who specifically need Studio, unlimited AI credits or advanced challenge options and are prepared to seek custom pricing. The API tiers target teams embedding execution into a service, while Enterprise is oriented toward deployments described for up to 1,000 users.

It is less compelling for buyers who need clear prices for Studio or a new organization setup. The API plans have explicit monthly quotas, so teams should match the tier to expected call volume rather than assume unlimited capacity.

Pros and cons

• Pro: Unlimited code executions on Free remove a common constraint for practice and experimentation.
• Pro: Studio brings a Linux-backed VS Code environment, debugger and persistent workspaces into the browser, with deployment for supported projects.
• Pro: API and embedding options cover multiple coding workflows, including LMS sign-in through JWT.
• Con: Plus, Pro and Ultra have custom pricing despite sharing the same published feature set, making tier selection difficult to assess.
• Con: API plans other than More/Custom impose monthly call caps; higher-volume use requires a more expensive tier or custom pricing.
• Con: Organizations is being retired, which rules it out as a dependable basis for a new organizational setup.

Alternatives

CodeHS is a better fit for teachers seeking a free teacher plan with 100+ courses, browser-based editing and automatic code submission and section management. JDoodle is worth considering when a free allowance of 1,000 executions per day, 100 saved projects and one collaborator per project suits the workflow. Replit is an alternative for users who want its broad platform availability and a free Starter plan with daily usage, one live project and one background task at a time.

Playcode may suit users who value a free option with trial AI credits, three projects or published sites and one collaborator, accepting required branding. CodePad is a free alternative. JupyterLite is another free option. Scratch is a free platform for creating and sharing projects. CodeSandbox is an alternative with member and monthly VM-credit tiers.

Browse more options in Code Playground Software and Coding Playgrounds.

Verdict

Choose OneCompiler if you want broad browser-based code execution at no cost, or need its Studio and API capabilities for a larger workflow. The unlimited free executions are its clearest advantage; custom pricing for Studio tiers and the retirement of Organizations are reasons to look elsewhere when predictable team plans or a new organizational workspace are essential.