Butterbase: Pricing, Features & Best Use Cases

Our take: Butterbase fits people who build apps through an AI assistant over MCP and want a hosted Postgres, auth and storage backend that starts free and costs $19 per month for three projects.

Main limitation: Free Playground projects pause after one week of inactivity and include only $1 of AI usage, one time.

By the AI Tool Atlas editors. Based on the vendor's official documentation; we have not tested this product hands-on. What “documented overview” means

Who Butterbase fits

Butterbase fits people who build apps through an AI assistant over MCP and want a hosted Postgres, auth and storage backend that starts free and costs $19 per month for three projects. Based on the vendor's documentation, not on a hands-on test.

Best for: Non-engineering firms using AI assistants

Also a good fit for

Developers prototyping AI-built apps

Consider another tool if free projects are paused after 1 week of inactivity

Or if

Free plan limited to 1 project and $1 one-time AI usage
Overage billing for storage and bandwidth on paid plans

Butterbase pricing and usage limits

Prices checked Sep 29, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.

The official Butterbase pricing page as we saw it. butterbase.ai, captured Oct 1, 2026

Free access and trial conditions

Playground plan is free, no card.

None beyond the free plan.

Paid plans: what changes as you upgrade

Playground web

Free source (opens in a new tab)

Month

For: Trying an idea without a card

Limits

1 project, 500 MB database, 1 GB file storage
5 GB bandwidth, 10,000 monthly active users

1 more

$1 AI usage one time; paused after 1 week inactive

Includes

Preview deployments
Custom domains

1 more

Priority support

Launch web

$19/mo source (opens in a new tab)

Month

Paid plans bill overage at $0.125/GB storage and $0.09/GB bandwidth

For: One real app in front of users

Limits

3 projects, 4 GB database, 50 GB storage
100 GB bandwidth, 50,000 monthly active users

1 more

$5 AI usage each month

Includes

Everything in Playground
Preview deployments

1 more

Custom domains

Certified web

$90/mo source (opens in a new tab)

Month

Paid plans bill overage at $0.125/GB storage and $0.09/GB bandwidth

For: Teams shipping on a schedule

Limits

10 projects, 8 GB database, 100 GB storage
250 GB bandwidth, 100,000 monthly active users

1 more

$15 AI usage each month

Includes

Everything in Launch
Priority support

Enterprise web

Custom pricing source (opens in a new tab)

Custom

For: Companies needing compliance

Limits

Unlimited projects and usage

Includes

Single sign-on
SOC 2 report and HIPAA add-on

1 more

24x7x365 support and private Slack

Usage caps, credits and extra costs

Paid plans bill overage at $0.125/GB storage and $0.09/GB bandwidth.

Not stated.

What is Butterbase, and how does it work?

Butterbase is a backend platform for businesses built so AI coding assistants can set up and run it directly. It provides a Postgres database with row-level security, authentication, realtime, functions, storage and an AI gateway. Assistants such as Claude Code, Cursor and Codex connect over MCP to build apps like client portals, CRMs and intake forms. The platform can also be self-hosted.

Butterbase's official site: how the product presents itself. butterbase.ai, captured Oct 1, 2026

What you provide and what you get back

What you give Butterbase and what comes back, from its documentation

You provide

Natural-language instructions from Claude, Codex or Cursor over MCP
Business records, documents and forms
Auth settings and row-level policies

You get back

Hosted Postgres database and auth
Deployed client portals, CRMs and dashboards
Stored files and realtime updates

Where you can use it

Platforms: Web, API
Account: Required
Database size: 500 MB / 4 GB / 8 GB
Projects: 1 / 3 / 10
Monthly active users: 10,000 / 50,000 / 100,000
Auth methods: Email, Google, GitHub, magic links
AI usage allowance: $1 once / $5 / $15 monthly

What people use Butterbase for

Scenarios are worked out by our editors from the documentation; the actual result depends on your input and plan.

Client portals

Who: Law firms and consultancies without engineers
You provide: A prompt describing the portal to an AI assistant
Expected result: Live client portal on a custom domain
Plan needed: Launch
Limitation: Needs an AI assistant with MCP access source (opens in a new tab)

Internal CRM or dashboards

Who: Small firms replacing several SaaS tools
You provide: Contact and deal records
Expected result: Internal CRM with intake and follow-up
Plan needed: Launch or Certified
Limitation: Active user and storage caps apply source (opens in a new tab)

Client intake and documents

Who: Real estate and service teams
You provide: Intake forms and uploaded documents
Expected result: Client intake with stored files and audit trail
Plan needed: Playground to test
Limitation: Free projects pause after a week idle source (opens in a new tab)

Key features and their practical limits

Feature overview on the official site. butterbase.ai, captured Oct 1, 2026

Postgres database with row-level security

Provides Postgres with row-level security to restrict who sees which rows Protects client data in multi-user apps

Access: All plans, 500 MB to 8 GBLimit: Database size capped per plan source (opens in a new tab)

Authentication (email, Google, GitHub, magic links)

Handles sign-in with email, Google, GitHub and magic links Avoids building login yourself

Access: Part of the backendLimit: Monthly active user caps 10,000 to 100,000 source (opens in a new tab)

Realtime, functions and file storage

Adds realtime updates, serverless functions and file storage Powers live dashboards and uploads

Access: 1 GB to 100 GB storageLimit: Overage billed per GB source (opens in a new tab)

AI gateway with usage allowance

Routes model calls through a gateway with a monthly allowance Lets apps use AI without separate keys

Access: $1 once, then $5 or $15 monthlyLimit: Usage beyond allowance not detailed source (opens in a new tab)

Butterbase pros and cons

Where Butterbase is strong

Free Playground plan without a card No card needed to start; test an idea first documented source (opens in a new tab)
Paid plans list project, database and bandwidth limits Clear project, database and bandwidth caps per plan documented source (opens in a new tab)
Self-hostable per the official site Self-hostable per the official site, reducing lock-in documented source (opens in a new tab)
Works with several AI assistants over MCP Works with Claude, Codex, Cursor over MCP documented source (opens in a new tab)
Homepage states $0 per-seat tax Adding staff does not raise the bill documented source (opens in a new tab)

Limitations to check before paying

Free projects are paused after 1 week of inactivity Free projects pause after a week of inactivity documented source (opens in a new tab)
Free plan limited to 1 project and $1 one-time AI usage Free plan allows one project and $1 one-time AI usage documented source (opens in a new tab)
Overage billing for storage and bandwidth on paid plans Storage and bandwidth overage bills on paid plans documented source (opens in a new tab)
Requires an account Account required documented source (opens in a new tab)
Docs and privacy URLs returned the homepage Technical and data terms could not be checked documented source (opens in a new tab)

How to use Butterbase for building a client portal with an AI assistant

Set up Butterbase

Start free on the Playground plan, no card
Create a project and copy its MCP connection details
Add the Butterbase MCP server to Claude Code or Cursor
Define tables such as leads and invoices through the assistant

Example: building a client portal with an AI assistant

Prompt the assistant to build a client portal with login
Let it create the schema and row-level policies
Deploy to a preview URL
Attach a custom domain on a paid plan

Review and export the result

Sign in as two users and confirm each sees only their own rows
Check usage against database and bandwidth caps

Example prompt suggested by our editors (not a recorded output of the product)

Using the Butterbase MCP, create tables for clients and documents with row-level security, add magic-link login and deploy a simple client portal.

Butterbase API

Plan comparison on the official pricing page. butterbase.ai, captured Oct 1, 2026

API access and separate billing

Butterbase has no public API in its official documentation. MCP access listed on homepage; docs URL returned homepage text.

Privacy, data use and commercial rights

Summarized from the vendor's current policies; this is not legal advice and a vendor's badge is not an independent audit.

How your inputs and outputs are handled

Business records and files are stored in your project database and storage.

Commercial use and plan restrictions

SOC 2 report, HIPAA add-on and SSO on Enterprise

Controls for business users

Row-level security
Backend-enforced policies
Audit trail

Other tools to consider instead of Butterbase

"Better suited" is based on documented features and pricing, not on a head-to-head test.

Lovable: better suited to

Replit: better suited to

Cursor: better suited to

Alternatives
Alternative	Pricing	Limitation
Lovable	—	—	Compare
Replit	—	—	Compare
Cursor	—	—	Compare

Explore Butterbase further

Butterbase pricing, plan by planEvery plan with USD prices, limits and what is free.Best Butterbase alternativesTools for the same job, by need and starting price.Best AI coding toolsOur picks in this category, compared by price and free tiers.Prompts for ButterbaseReady-to-copy prompts with their sources.

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Butterbase FAQ

Is Butterbase free?

Yes, the Playground plan is free with no card, but it allows one project, 500 MB database and $1 of AI usage once, and idle projects pause after a week. source (opens in a new tab)

How much does the Launch plan cost?

$19 per month for 3 projects, a 4 GB database, 50 GB storage, 100 GB bandwidth and $5 of monthly AI usage. source (opens in a new tab)

What extra charges apply on paid plans?

Overage is billed at $0.125 per GB of storage and $0.09 per GB of bandwidth. source (opens in a new tab)

Which AI assistants work with Butterbase?

The homepage lists Claude Code, Claude, Cursor, Codex, Windsurf, GitHub and Cline connected via MCP. source (opens in a new tab)

Which plan adds SSO and SOC 2?

Enterprise, which also lists a HIPAA add-on, uptime guarantee and 24x7 premium support. source (opens in a new tab)

Sources and review methodology

Official sources and verification dates

Butterbase home homepage · checked Oct 1, 2026
Butterbase pricing pricing · checked Oct 1, 2026

Not verified: docs content; privacy policy text; data retention; AI gateway models; regional availability.

How we documented and maintain this page

Every fact about Butterbase above comes from the 2 official pages listed here, last compared on Sep 29, 2026; we have not run Butterbase ourselves, so it has no editorial score. How we check and re-check pages.

Article updated Oct 10, 2026; prices checked Sep 29, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error