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Most buyers should pick Supabase.
Choose Replit when you want an AI-assisted path from a prompt to a published app, with hosting and other built-in services. Choose Supabase when your codebase needs a Postgres backend with REST APIs, auth, storage, and realtime features. Supabase gives developers more control over the backend and a self-hosting option; Replit packages more of the app-building workflow. Compare Replit’s model credits and Supabase’s usage charges against your expected workload before committing.
01Side by side
| Replit | Supabase | |
|---|---|---|
| Pricing model | Monthly plans include credits for AI models | Plans plus metered usage and compute |
| Free tier | Free Mode; detailed quotas are not listed | Published quotas for users, storage, egress, projects |
| Open source and licence | Open-source status and licence not stated | Open source; check repository licence |
| Self-hosting | Self-hosting option not stated | Self-hostable Postgres platform |
| API and SDKs | Agent-led app creation and built-in services | REST APIs; JavaScript SDK and React example |
| Integrations | 100+ integrations, including OpenAI and Stripe | React, Flutter, Stripe, OpenAI, and others |
| Deployment model | Build and publish apps on Replit | Hosted backend services; self-hosting is available |
| Limits and scaling | Plan allowances; model credits vary by tier | Published quotas, overage rates, and compute sizes |
Replit Choose Replit if
- Choose Replit if you want an AI agent to build an app from prompts.
- Choose Replit if you want hosting and app services in one workflow.
- Choose Replit if its listed integrations fit your existing tools.
Supabase Choose Supabase if
- Choose Supabase if your application needs a Postgres backend.
- Choose Supabase if you want REST APIs, auth, storage, and realtime.
- Choose Supabase if self-hosting and database portability matter.
02Pricing at real usage
Replit has Free Mode at $0, Core at $20 monthly ($18/month billed annually), and Pro at $100 monthly ($90/month annually). Core includes $20 toward more powerful models; Pro includes $100 toward the most powerful models. Core also lists up to 30 hours of Free Mode chat and up to 60 Free Mode projects. Pro adds up to 15 collaborators. Enterprise is custom-priced. Estimate AI spend against the included credits and confirm extra usage costs before rollout.
Supabase Free is $0, with 50,000 monthly active users, 500 MB database per project, 5 GB egress, 1 GB file storage, and two projects that pause after a week inactive. Pro starts at $25/month, with larger allowances; overages for users, disk, egress, and storage are billed at published rates. Compute starts at $10/month, and paid plans include $10/month in compute credits.
03API, SDKs and integration
Replit is a browser-based app creation and publishing platform. Its Agent writes and evolves project code from prompts; chat and a visual design canvas provide other ways to shape an app. Authentication, database, hosting, and monitoring are built in. The homepage says Replit supports 100+ integrations, including OpenAI, Stripe, and Google Workspace. Replit links to documentation, but its product pages do not specify a language-specific SDK, public API shape, CLI, or supported protocols. Verify those details before making it part of a CI pipeline or an existing codebase.
Supabase centers on Postgres and provides ready-to-use REST APIs. Its docs show the @supabase/supabase-js SDK in a React example. Auth with Row Level Security, Storage, Realtime, and Edge Functions sit alongside the database. The homepage names React, Next.js, Flutter, Expo, and React Native, plus integrations including Stripe, Vercel, OpenAI, Hugging Face, and LangChain. Check its docs for CLI and language-specific SDK needs before choosing your integration pattern.
04Open source, self-hosting and lock-in
Supabase is open source and self-hostable, and describes each project as a full, 100% portable Postgres database. That gives teams a standard database layer to move or operate outside the hosted service. Auth, Storage, Realtime, Edge Functions, and platform APIs can still require migration work. Check the applicable repository licence and feature parity before self-hosting; the open-source label alone does not specify deployment obligations.
Replit describes a hosted build-and-publish workflow with built-in services, but does not state an open-source licence or self-hosting option. Agent-generated project code may be portable as code, but Replit does not describe a full-stack migration or database export path on its homepage. Before production, identify where source, secrets, database contents, auth users, and uploaded files live, then confirm export procedures and formats.
Questions people ask
Is Supabase the best option?
Supabase is a strong fit when you want a Postgres database with auth, storage, REST APIs, and realtime features in one backend platform. It is not automatically the best choice for every project: teams wanting an AI-assisted app-building and publishing workflow may prefer Replit, while Supabase suits teams building around a backend they control.
Is anything better than Replit?
That depends on what you need. Replit focuses on creating and publishing apps with an AI agent and built-in services. Supabase is a better fit when the main requirement is a Postgres backend, portable database, and self-hosting option. For a developer comparing these two, the key distinction is app-building workflow versus backend infrastructure.
Which is good, Supabase or Firebase?
Supabase is the clearer fit if you specifically want Postgres, Row Level Security, and a portable relational database. This comparison does not establish Firebase’s pricing, limits, or feature trade-offs, so compare those against your workload and deployment requirements before deciding. Check both vendors’ current terms for the services your app will use.
Do any big companies use Supabase?
Supabase’s homepage says it is trusted by fast-growing companies, but it does not name specific large-company customers in the claims considered here. If customer references are part of your procurement review, ask Supabase for references relevant to your industry, workload, security requirements, and expected scale.