Convex

Convex is a reactive backend platform that combines a serverless database, TypeScript server functions, and live-updating client libraries into one integrated stack. We rate it 85/100 — the most cohesive developer experience in backend-as-a-service today, with one big asterisk: you're buying into their TypeScript-first abstractions, not standard SQL.

What is Convex?

Convex was founded in 2021 by Jamie Turner (ex-Dropbox Engineering Director), James Cowling, and Sujay Jayakar, with a team of engineers who previously built sync and storage systems at Dropbox. The company raised a $26.1M Series A from Andreessen Horowitz and Netlify in April 2022, publicly launched in May 2022, and open-sourced the core backend in 2024.

The core pitch is that most apps spend 80% of their backend effort on boilerplate: caching, WebSocket glue, REST endpoints, cache invalidation, and optimistic updates. Convex collapses all of that into one model — you write a TypeScript query function, and any client that reads from it automatically re-renders when the data changes. No React Query, no Redux, no WebSocket provider, no serverless endpoint boilerplate.

Key Features of Convex

• Reactive queries: Every TypeScript query function runs inside a reactive runtime — clients subscribe automatically and receive sub-100ms updates when the underlying data changes, with no WebSocket setup required.
• End-to-end type safety: Your database schema, server functions, and client hooks share the same TypeScript types. There is no code-gen step, no OpenAPI spec, no tRPC router to wire up — autocomplete just works.
• Built-in features that normally cost 3 products: Authentication (80+ OAuth providers via Convex Auth), cron jobs, file storage, full-text and vector search, actions (Node.js-style long tasks), webhooks, and durable workflows are all first-class primitives.
• Open-source and self-hostable: The core backend is Apache 2.0 licensed (11.3k+ GitHub stars). You can run Convex in Docker or Kubernetes — though the hosted experience is significantly smoother.
• Convex Components: A reusable module system for things like rate limiting, geospatial queries, sharded counters, and agent workflows — installable with a single command.
• Chef and AI-native: Convex Chef generates working full-stack apps from prompts, and the platform is designed so LLMs reliably produce correct Convex code.

What Users Say About Convex

Developer sentiment is consistently strong, especially from indie and small-team builders. On Product Hunt Convex holds a 5.0/5.0 rating across 40+ reviews, with praise concentrated on onboarding speed, clear docs, and responsive founders. On Reddit (r/nextjs, r/reactjs) and Hacker News, the dominant sentiment is that Convex "makes backend work feel simpler" and "just works" for reactive apps replacing Firebase or handwritten WebSocket setups.

The most common complaints are real, though: you learn Convex's abstractions instead of SQL, heavy analytic or map-reduce queries still need a separate warehouse, and the compute-time pricing on long-running functions can surprise teams that spawn a lot of background work. A vocal minority site at convex.sucks catalogs edge cases — worth reading before committing on an enterprise project. The fair summary: excellent for greenfield TypeScript apps; a tougher fit if you need portable SQL or self-serve dashboards for non-engineers.

Convex Pricing

Convex offers a permanent free tier with no credit card required, then scales via a per-developer Professional plan and a custom-quoted Business/Enterprise plan. Overage on all paid plans is pay-as-you-go.

Plan	Price	Key Limits
Free & Starter	$0/month	1–6 devs, 1M function calls/mo, 0.5 GB DB, 1 GB files, 20 GB-h compute, 30-day log retention
Professional	$25/developer/month	Up to 20 devs, 25M calls/mo, 50 GB DB, 100 GB files, 250 GB-h compute, daily backups, SOC 2 / HIPAA reports, custom domains
Business & Enterprise	From $2,500/month	50+ devs, unlimited deployments, SSO/SAML, fine-grained permissions, dedicated infra, SLAs, enterprise support

Overage pricing: additional function calls are billed at roughly $2 per 1M calls, DB storage at $0.20/GB/month, and action compute in GB-hours. Startup discounts and an open-source program offer the Professional tier free for qualifying teams.

Who Should Use Convex?

Best for: TypeScript-native teams building real-time, multiplayer, or AI-agent apps (chat, collaborative editors, dashboards, live multiplayer games, LLM chat UIs). Solo developers and 2–5 person startups get the most leverage — Convex replaces Supabase + a realtime layer + a jobs system with one SDK, and the free tier comfortably covers early-stage projects.

Not ideal for: Teams with heavy SQL reporting or BI requirements (you'll still need a warehouse), Python/Go/Ruby shops (the first-class SDK story is TypeScript-only), regulated enterprises that require full on-premise deployment without any SaaS coupling, and anyone who wants to stay close to Postgres for portability.

Pros and Cons

Pros:

• End-to-end TypeScript type safety with zero code-generation overhead — genuinely unique among backend-as-a-service offerings
• Reactive queries and automatic caching eliminate an entire category of bugs (cache invalidation, stale data, optimistic update glitches)
• Generous free tier: 1M function calls/month and 0.5 GB DB with no credit card required
• Open-source core (Apache 2.0, 11.3k+ GitHub stars) — you can self-host if strategic requirements change
• Built-in auth, cron jobs, file storage, and vector search mean fewer third-party services to stitch together

Cons:

• You learn Convex's query API instead of SQL — migrating off the hosted platform is possible but not seamless
• Compute-time pricing on long actions can become expensive for workloads with heavy background processing
• No first-class Python, Go, Rust, or Ruby client — TypeScript is the only fully supported language
• Analytics and BI workflows still require exporting data to a warehouse like BigQuery or ClickHouse

Alternatives to Convex

The closest alternatives are Supabase (open-source Postgres with realtime — more portable, less integrated), Firebase (Google's original reactive backend — larger ecosystem, weaker TypeScript story), and Neon (serverless Postgres — only a database, not a full backend). For pure AI-backend needs, PocketBase is a lightweight self-hosted alternative worth comparing, and Trigger.dev handles the durable-workflow piece without the full backend.

Verdict: Is Convex Worth It?

Yes, for the right team. If you're building a reactive TypeScript app and you value developer experience more than having a SQL escape hatch, Convex is the best-in-class option in 2026. The 85/100 rating reflects outstanding DX, a genuinely differentiated sync model, and a real open-source backstop, docked for the non-trivial lock-in, the TypeScript-only client story, and the compute-heavy pricing that catches some teams off guard. Start on the free tier — you'll know within a weekend whether Convex's abstractions click for your workflow.

Frequently Asked Questions

Is Convex free?

Yes. Convex has a permanent free Starter plan that includes 1 million function calls per month, 0.5 GB database storage, 1 GB file storage, 20 GB-hours of action compute, and up to 6 developers per team — no credit card required. The Professional plan starts at $25 per developer per month.

Is Convex open source?

Yes. The core Convex backend is open-source under the Apache 2.0 license and has over 11,300 stars on GitHub at get-convex/convex-backend. It can be self-hosted via Docker, though the managed cloud offers a significantly smoother experience.

How does Convex compare to Supabase?

Convex is a reactive TypeScript backend with its own query engine; Supabase is open-source Postgres with a realtime layer added on top. Convex wins on developer experience and end-to-end type safety. Supabase wins on SQL portability, Postgres ecosystem compatibility, and first-class support for non-TypeScript languages. Pick Convex for greenfield TypeScript apps; pick Supabase if SQL portability matters.

What platforms does Convex support?

Convex has official first-class client libraries for TypeScript/JavaScript (React, Next.js, React Native, Vue, Svelte), Python (preview), Rust (preview), and a REST/HTTP API for anything else. The Convex dashboard is web-based; there is no desktop or mobile app.

Who founded Convex?

Convex was founded in 2021 by Jamie Turner (CEO, formerly Senior Engineering Director at Dropbox), James Cowling, and Sujay Jayakar. The company is backed by Andreessen Horowitz and Netlify and is headquartered in San Francisco.