--- title: Convex vs Supabase slug: convex-vs-supabase url: "https://toolweight.dev/vs/convex-vs-supabase" category: convex-alternatives last_verified: 2026-07-20 license: CC-BY-4.0 --- # Convex vs Supabase > Compared on the Convex alternatives field registry — 26 fields, all sourced. ## Where they differ | Field | Convex | Supabase | | --- | --- | --- | | TS inference | ● | ◐ | | Transactions | occ | mvcc | | Optimistic writes | ● | ○ | | Auth | first-party-addon | built-in | | Hard limits | 1 MiB per document; roughly 16k documents or 8 MiB scanned per query; queries and mutations capped near 1s of compute. | Postgres limits apply: about 1 GB per field, no vendor row cap. The real ceilings are connection count and the compute tier you pay for. | | Cold start (ms) | 0 ms | 250 ms | | Function timeout (ms) | 10 min | 2.5 min | | Exit cost | 4 | 2 | | Raw SQL | ○ | ● | | Schema changes | declarative-push | sql-migrations | | Agent fit | 5 | 4 | | Pricing model | per-seat + usage | flat per org + compute + usage | | GitHub stars | 8,000 | 90,000 | | Positioning | The open-source reactive database for app developers. | The Postgres development platform — the open-source Firebase alternative. | ## Every field | Field | Convex | Supabase | | --- | --- | --- | | Reactivity | push | push | | TS inference | ● | ◐ | | Transactions | occ | mvcc | | Local-first sync | ○ | ○ | | Optimistic writes | ● | ○ | | Cron & scheduling | ● | ● | | File storage | ● | ● | | Vector search | ● | ● | | Full-text search | ● | ● | | Auth | first-party-addon | built-in | | Hard limits | 1 MiB per document; roughly 16k documents or 8 MiB scanned per query; queries and mutations capped near 1s of compute. | Postgres limits apply: about 1 GB per field, no vendor row cap. The real ceilings are connection count and the compute tier you pay for. | | Cold start (ms) | 0 ms | 250 ms | | Function timeout (ms) | 10 min | 2.5 min | | Exit cost | 4 | 2 | | Self-hostable | ● | ● | | Bulk export | ● | ● | | Raw SQL | ○ | ● | | Schema changes | declarative-push | sql-migrations | | MCP server | ● | ● | | Agent fit | 5 | 4 | | Pricing model | per-seat + usage | flat per org + compute + usage | | Entry price (/mo) | $25 /mo | $25 /mo | | Egress metered | ● | ● | | GitHub stars | 8,000 | 90,000 | | Backing | venture-backed | venture-backed | | Positioning | The open-source reactive database for app developers. | The Postgres development platform — the open-source Firebase alternative. | ## Each option ### Convex — 65.5 / 100 Reactive TypeScript backend: database, functions and live queries in one project. The fastest path from empty repo to working realtime feature, and the clearest thinking about transactions on this page. It is also a 4 on exit cost with no SQL escape hatch — a bet worth making deliberately rather than by default. - Small teams shipping realtime-shaped product fast - Codebases where a coding agent does most of the plumbing - Apps whose lifespan is short enough that the exit never arrives ### Supabase — 74.6 / 100 Managed Postgres with auth, storage, realtime and edge functions around it. The default choice for anyone who wants managed convenience without giving up their database. The seams show — four services, RLS in SQL, codegen instead of inference — but pg_dump is a complete exit, and that buys a lot of friction. - Teams that need raw SQL, BI tooling or a third-party ORM against the same data - Anyone who wants a credible migration path off the platform from day one - Projects already comfortable with Postgres row-level security ## Sources | Tool | Field | Confidence | Verified | Source | | --- | --- | --- | --- | --- | | Convex | Reactivity | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/functions/query-functions | | Convex | TS inference | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/database/schemas | | Convex | Transactions | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/database/advanced/occ | | Convex | Optimistic writes | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/client/react/optimistic-updates | | Convex | Cron & scheduling | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/scheduling | | Convex | File storage | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/file-storage | | Convex | Vector search | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/search/vector-search | | Convex | Full-text search | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/search | | Convex | Hard limits | Inferred | — | https://docs.convex.dev/production/state/limits | | Convex | Self-hostable | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/self-hosting | | Convex | Bulk export | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/database/import-export/ | | Convex | Raw SQL | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/database | | Convex | MCP server | Vendor-claimed | 2026-07-20 | https://docs.convex.dev/ai/convex-mcp-server | | Convex | Pricing model | Vendor-claimed | 2026-07-20 | https://www.convex.dev/pricing | | Convex | Entry price | Vendor-claimed | 2026-07-20 | https://www.convex.dev/pricing | | Convex | Egress metered | Vendor-claimed | 2026-07-20 | https://www.convex.dev/pricing | | Convex | Positioning | Vendor-claimed | 2026-07-20 | https://www.convex.dev | | Supabase | Reactivity | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/realtime | | Supabase | TS inference | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/api/rest/generating-types | | Supabase | Transactions | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/database | | Supabase | Cron & scheduling | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/cron | | Supabase | File storage | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/storage | | Supabase | Vector search | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/ai | | Supabase | Full-text search | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/database/full-text-search | | Supabase | Auth | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/auth | | Supabase | Self-hostable | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/self-hosting | | Supabase | Bulk export | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/database/connecting-to-postgres | | Supabase | Schema changes | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/deployment/database-migrations | | Supabase | MCP server | Vendor-claimed | 2026-07-20 | https://supabase.com/docs/guides/getting-started/mcp | | Supabase | Pricing model | Vendor-claimed | 2026-07-20 | https://supabase.com/pricing | | Supabase | Entry price | Vendor-claimed | 2026-07-20 | https://supabase.com/pricing | | Supabase | Egress metered | Vendor-claimed | 2026-07-20 | https://supabase.com/pricing | | Supabase | Positioning | Vendor-claimed | 2026-07-20 | https://supabase.com | See the full roster: [Convex alternatives](https://toolweight.dev/compare/convex-alternatives) — 11 tools. ## Licence and attribution Data from toolweight (https://toolweight.dev), licensed CC-BY-4.0. - Licence: [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/) - Canonical HTML: https://toolweight.dev/vs/convex-vs-supabase - Machine-readable: https://toolweight.dev/vs/convex-vs-supabase.md · https://toolweight.dev/api/v1 · https://toolweight.dev/mcp - toolweight takes no affiliate revenue and sells no placements. 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