PromptBase vs Supabase

Side-by-side — pricing, strengths, tradeoffs, and fit.

PromptBase

Marketplace for DALL·E, Midjourney & GPT-3 prompts

Supabase

The open-source Firebase alternative with Postgres

At a glance

Free Tier
· Not enough data·From Freemium
Open SourceFree TierEnterprise
● Established·From Freemium

Overview

One-liner

Marketplace for DALL·E, Midjourney & GPT-3 prompts

One-liner

The open-source Firebase alternative with Postgres

Maturity

Not enough data

Maturity

Established

Open source

✕ No

Open source

✓ Yes

Pricing

Free tier

✓ Available

Free tier

✓ Available

Starts at

Freemium

Starts at

Freemium

Model

Flat rate

Model

Hybrid

Enterprise

✕ None

Enterprise

✓ Available

Best for

✓ Best for

Design teams needing a variety of image prompts for different projects
Marketing professionals looking to quickly generate content ideas
Independent artists and writers who want to monetize their creative skills

✓ Best for

Startup founders and indie developers who need a complete backend-as-a-service with auth, database, and storage in one place
Teams moving from Firebase who want a relational database with a generous free tier
Developers who want to self-host their database infrastructure while keeping a familiar UI

Not ideal for

✕ Not for

Users requiring real-time prompt generation capabilities
Projects with strict budget constraints as premium prompts can be costly

✕ Not for

Teams needing a horizontally sharded database for massive write throughput
Enterprises requiring SOC 2 on the free plan without upgrading to a paid tier

Strengths

↑ Strengths

Marketplace for buying and selling AI-generated content prompts
Supports multiple AI models including DALL·E, Midjourney, and GPT-3
Monetization opportunities for prompt creators

↑ Strengths

Postgres database
Authentication
Auto-generated REST and GraphQL APIs
Realtime subscriptions

Weaknesses

↓ Weaknesses

Limited language support
Vendor lock-in
Small community and limited integrations

↓ Weaknesses

Free tier projects are automatically paused after one week of inactivity, limiting continuous availability for hobby projects.
Custom SMTP integration for authentication emails fails with Microsoft Office 365 and Outlook, breaking standard email workflows.
The Supabase Node.js client causes ESM handling issues that break Vitest testing environments.
Extension version pinning is deprecated, forcing users to accept default versions and ignoring explicit version specifications.
Full PromptBase profile →Full Supabase profile →