Supabase vs Firebase (2026) for vibe coders

⚡ Quick verdict

Pick Supabase for an all-in-one Postgres backend with auth, APIs, realtime, storage and vectors, with a flat $25/mo Pro plan. Pick Firebase for mobile apps and Google’s ecosystem, with pay-as-you-go pricing on Blaze.

📊 Comparison

Tool	Starting price	Free tier	Best for	Strengths	Weaknesses
Supabase	$25/mo (Pro) checked 2026-10-15 · source	Yes	All-in-one backend	Postgres with auth, APIs, realtime, storage and vectors in one platform Free tier; Pro is $25/mo	Pro starts at $25/mo once you outgrow free
Firebase	Pay as you go (Blaze plan) checked 2026-10-15 · source	Yes	Mobile apps	Google's platform: database, auth, hosting and more Free tier, then pay as you go (Blaze)	Pay-as-you-go billing on Blaze is harder to predict than a flat fee

Prices are starting paid prices from each tool's official pricing page on the date shown. Pricing changes often; check the source before you buy.

🧭 Which should you pick?

Choose Supabase if your AI app builder or coding agent works with Postgres and you want predictable flat pricing when you outgrow the free tier.
Choose Firebase if you are building a mobile app or already use Google Cloud.
Both have free tiers, so you can start either at $0.