Convex vs Prisma for Solo Developers

Quick Comparison

Convex Overview

Convex is not just a database. It's an entire backend platform. You get a reactive database, server functions, file storage, scheduled jobs, and real-time subscriptions, all in one package. Your frontend subscribes to data queries, and when the underlying data changes, the UI updates automatically. No WebSocket setup, no polling, no manual cache invalidation.

The TypeScript-first approach is a strength. You write your server functions in TypeScript, define your schema in TypeScript, and the generated client gives you end-to-end type safety from database to frontend. Change a field in your schema, and TypeScript errors appear everywhere that field is used. It's impressive.

I've been intrigued by Convex for real-time features. Building collaborative apps, live dashboards, or chat systems with Convex means you skip the entire real-time infrastructure setup. Data changes propagate to connected clients automatically. For a solo developer, not having to build and maintain WebSocket servers is a massive time savings.

The free tier is usable for real projects. The $25/mo Pro plan scales with you. And the developer experience, from the CLI to the dashboard to the documentation, is polished.

Prisma Overview

Prisma is the most popular TypeScript ORM. You define your models in a .prisma schema, generate a typed client, and query your database with full autocomplete and type safety. It supports PostgreSQL, MySQL, SQLite, MongoDB, and CockroachDB.

Prisma is a tool, not a platform. It handles one thing well: type-safe database access. It doesn't host your data, doesn't run server functions, doesn't handle file storage. You pair it with a database (Neon, Supabase, PlanetScale) and a backend framework (Next.js API routes, Express, Hono). You assemble the stack yourself.

The maturity shows. Documentation is excellent. The community is huge. Prisma Studio for visual browsing is unique. The migration system is battle-tested. For solo developers building traditional request-response APIs, Prisma is a proven choice.

Key Differences

Platform vs tool is the core distinction. Convex gives you the database, server functions, file storage, and real-time subscriptions as one integrated platform. Prisma gives you one piece (the ORM) and you choose everything else. Convex is a fully set table. Prisma is a really good fork.

Real-time is where Convex shines uniquely. With Prisma, adding real-time means setting up WebSockets, managing subscriptions, handling reconnections, and invalidating caches. With Convex, real-time is the default. Every query is reactive. This is a massive difference for applications that need live data: collaborative tools, dashboards, chat, notifications.

Vendor lock-in is the Convex tradeoff. Prisma is open source and works with any SQL database. You can switch from Neon to Supabase to a self-hosted Postgres and your Prisma code stays the same. Convex is proprietary. Your server functions, queries, and data model are all Convex-specific. If Convex raises prices or shuts down, migration is a full rewrite.

Query language differs fundamentally. Prisma generates SQL under the hood. Your queries eventually become SELECT, INSERT, UPDATE, DELETE statements. Convex uses its own query language and execution model. Your SQL knowledge doesn't transfer to Convex. If you've spent years learning SQL, Prisma leverages that investment. Convex asks you to learn something new.

Server functions replace your API layer in Convex. With Prisma, you write API routes in Express, Next.js, or Hono, then use Prisma to query the database inside those routes. With Convex, the server functions ARE your API. Queries and mutations run on Convex's infrastructure. You skip the backend framework entirely. For solo developers who find backend setup tedious, this is liberating.

Flexibility vs speed tradeoff. Prisma + a custom backend gives you infinite flexibility. You control the server, the deployment, the caching, everything. Convex gives you less control but much faster development. For MVPs and side projects where speed matters most, Convex wins. For applications that need custom infrastructure, Prisma's approach is better.

Pricing at scale. Prisma is always free (ORM layer). Your database host costs money, but you choose the provider. Convex is free to start, $25/mo for Pro, and scales from there. At high usage, Convex can get expensive because you're paying for compute, storage, and bandwidth in one bill. With Prisma + self-hosted Postgres, your scaling costs are more controllable.

By the Numbers (2026)

The marketing copy tells one story. The raw adoption and pricing numbers tell another. Here is what each tool actually looks like as of May 2026, checked against official pricing pages, the npm registry, and GitHub.

Versions and language. Convex ships as npm package version 1.39.1, published May 15, 2026. Prisma is on version 7.8.0, published April 22, 2026, which also matches its latest GitHub release tag. Both projects are written primarily in TypeScript and both publish their core under the Apache-2.0 license, so the open-source label applies to both even though the day-to-day experience differs.

Adoption gap. Prisma is the heavyweight here. The prisma CLI package pulls roughly 11.6 million weekly downloads and the runtime @prisma/client package pulls about 10.4 million, against 731,105 weekly downloads for the convex package. On GitHub the get-convex/convex-backend repository sits at 11,736 stars while prisma/prisma sits at 46,027. Prisma has close to a four-times star lead and more than a ten-times download lead. For a solo developer that maturity gap matters mostly for one thing, which is how fast you find a Stack Overflow answer or a matching GitHub issue when something breaks at 1am.

Free-tier ceilings. Convex's combined Free and Starter tier includes 1 million function calls, 0.5 GB of database storage, 1 GB of file storage, 0.5 GB of search storage, 1 GB of database I/O, 1 GB of data egress, and 1 to 6 developers per project, then bills pay-as-you-go above those. Prisma's ORM is free with no usage cap because it runs on your own infrastructure. If you also adopt Prisma Postgres, its free tier includes 100,000 operations, 500 MB of storage, and up to 50 databases.

Paid tiers. Convex Professional is 25 dollars per developer per month and raises the included buckets to 25 million function calls, 50 GB of database storage, and 100 GB of file storage. Prisma Postgres Starter is 10 dollars per month for 1 million operations and 10 GB of storage, Pro is 49 dollars per month for 10 million operations and 50 GB, and Business is 129 dollars per month for 50 million operations and 100 GB. The two products are not priced on the same unit, which is exactly why the next section works the math out.

Database reach. Prisma connects to PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB, and CockroachDB, plus the hosted variants like Neon, Supabase, PlanetScale, Turso, and Cloudflare D1. Convex stores your data in its own proprietary reactive store. There is no swapping in Postgres underneath it.

Real Cost at Solo-Dev Scale

The two tools meter different units, so a fair comparison needs a concrete workload. Assume a single-developer side project that has found a little traction, with roughly 2 million backend reads and writes per month, about 5 GB of stored data, and one developer on the project. Numbers below use the published per-unit rates as of May 2026.

Convex. One developer on the Professional plan is 25 dollars per month, and that plan already includes 25 million function calls and 50 GB of database storage, so 2 million calls and 5 GB sit comfortably inside the included buckets. You stay flat at 25 dollars. You could also try to live entirely on the Free and Starter tier, but 2 million calls is double the 1 million included there, so you would tip into pay-as-you-go overage and the Professional plan becomes the cleaner number to reason about.

Prisma. Here the answer depends on where the database lives. If you run the Prisma ORM against a Postgres box you host yourself, the ORM is free and your only cost is the server, so the Prisma layer is effectively zero and your bill is whatever Neon, Supabase, or a small VPS charges. If instead you adopt managed Prisma Postgres, 2 million operations per month exceeds the 1 million included on the 10 dollar Starter plan, which pushes you onto the 49 dollar Pro plan that includes 10 million operations and 50 GB. So the realistic managed-Prisma number at this workload is about 49 dollars per month, while the bring-your-own-database number can be far lower.

The takeaway. At this scale Convex lands near 25 dollars all-in with nothing else to wire up, and managed Prisma Postgres lands near 49 dollars while self-hosted Prisma can undercut both if you are willing to run the database yourself. Convex is the cheaper turnkey option at small scale, Prisma is the cheaper option if you already operate a database and want the ORM to be free. Re-run this with your own read and write counts before committing, because the curves cross at different points depending on how write-heavy your app is.

When to Choose Convex

• You're building a real-time application (collaborative tools, chat, live dashboards)
• You want to skip backend infrastructure setup entirely
• Speed to MVP matters more than long-term flexibility
• You're comfortable with vendor lock-in for faster development
• You want TypeScript end-to-end with reactive data

When to Choose Prisma

• You want full control over your backend architecture
• You prefer SQL databases and want to use your SQL knowledge
• Avoiding vendor lock-in is important to you
• You're building a traditional request-response API
• You want to pair your ORM with any database provider you choose

The Verdict

Both earn 8/10 for solo developers, but for very different reasons.

Choose Convex if you're building something real-time and you want to ship as fast as possible. The integrated platform means you write server functions and frontend queries, and everything else (real-time sync, caching, scaling) is handled for you. For side projects, MVPs, and applications where live data is central, Convex can save you weeks of development time.

Choose Prisma if you want maximum control and flexibility. Pair it with Neon or Supabase for the database, Next.js or Hono for the API, and you have a stack you fully understand and control. No vendor lock-in, your SQL skills transfer, and you can optimize every layer.

My take: for your first project or an MVP, Convex's speed is hard to beat. For your primary product or a project you expect to maintain for years, Prisma's flexibility and the broader ecosystem give you more room to grow. Use the right tool for the phase you're in.

Sources

All figures checked on 2026-05-28.

• Convex pricing and free-tier limits: https://www.convex.dev/pricing
• Prisma pricing (ORM, Postgres, Accelerate): https://www.prisma.io/pricing
• Prisma supported databases: https://www.prisma.io/docs/orm/overview/databases
• Convex docs: https://docs.convex.dev/home
• prisma GitHub repository (stars): https://github.com/prisma/prisma
• convex-backend GitHub repository (stars): https://github.com/get-convex/convex-backend
• prisma latest version: https://registry.npmjs.org/prisma/latest
• convex latest version: https://registry.npmjs.org/convex/latest
• prisma npm weekly downloads: https://api.npmjs.org/downloads/point/last-week/prisma
• convex npm weekly downloads: https://api.npmjs.org/downloads/point/last-week/convex