Database and auth
Best AI tools for database and auth
4 tools for builders and vibe coders. Filter by what you're willing to pay.
Our shortlist for database and auth is Supabase, Firebase, Clerk and Neon. All 4 have a free plan or free tier, and we checked all 4 free-tier notes against official pricing pages. If you want to start for free, try Supabase, Firebase, Clerk and Neon first.
4 tools for database and auth
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- Generous free tierPricing checked · Oct 15, 2026 · source for Supabase's pricing (opens in a new tab)$25/mo Pro
- Generous free tierPricing checked · Oct 13, 2026 · source for Firebase's pricing (opens in a new tab)Price unverified
- Generous free tierPricing checked · Oct 15, 2026 · source for Clerk's pricing (opens in a new tab)$20/mo billed annually
- Generous free tierPricing checked · Oct 15, 2026 · source for Neon's pricing (opens in a new tab)about $15/mo (usage-based estimate)
How to choose
Start with what you're willing to pay. Supabase, Firebase, Clerk and Neon are tagged free or generous free tier.
Where we could read a price on the official pricing page, the lowest paid plans start at: Supabase $25/mo Pro; Clerk $20/mo billed annually; Neon about $15/mo (usage-based estimate). Prices change often, and we don't always know whether a figure is billed monthly or annually, so confirm on the tool's site.
- Supabase is the pick for vibe-coded full-stack apps: Postgres + auth + storage backend. Free tier: free: 50K MAU, 500 MB database, 1 GB storage, 2 active projects, paused after 1 week inactive.
- Firebase is for backends for mobile apps: Google's app backend: DB, auth, hosting. Free tier: Spark plan at no cost with generous usage limits, no payment method needed.
- Clerk is for adding sign-in screens fast: drop-in user auth and management. Free tier: Hobby free, no card: up to 50K monthly retained users per app.
- Neon is for a serverless Postgres database: serverless Postgres with branching. Free tier: free $0: 1 GB Postgres storage per project, 100 projects, no time limit.
Supabase vs Firebase (2026): Free Tiers and Pricing Compared
Free tiers last checked Oct 15, 2026 against each tool's official pricing page (linked on each checked tool). Prices change often, so confirm on the tool's site.
Questions
- Which AI tools for database and auth are free?
- Supabase (generous free tier), Firebase (generous free tier), Clerk (generous free tier) and Neon (generous free tier).
- Which has the cheapest paid plan?
- Of the prices we could read on official pricing pages, Neon starts lowest at about $15/mo (usage-based estimate). We couldn't verify a price for Firebase.
- How did you check these free tiers?
- We compared all 4 free-tier notes on this page against each tool's official pricing page, most recently on Oct 15, 2026. Each checked tool links to the page we used.
- Which tool should I pick?
- Supabase is the pick for vibe-coded full-stack apps. Firebase is for backends for mobile apps. Clerk is for adding sign-in screens fast. See the full list below.
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