Plain vs SleekFlow

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Plain

See full pricing history

USD · US · source: www.plain.com

Plan	Pricing	Charged by	Offer type
Foundation — default	USD 35 monthly · USD 35 / month with annual commitment $35/month, billed yearly	Seat · $35 /month 1 seat + $35/additional seats start	Standalone · Fixed

SleekFlow

See full pricing history

USD · US · source: sleekflow.io

Plan	Pricing	Charged by	Offer type
Pro AI — Monthly Highlighted	USD 99 monthly · USD 79 / month with annual commitment US$ 79 / month (Yearly plan)	Flat · / month	Standalone · Fixed

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Plain

Foundation — default

Highlights User seats: 1 seat + $35/additional seats start

Included
AI features Credits included: 2,000/mo

Included
Highlights Channels: Slack, email, in-app channels

Included
AI features Ari AI agent: included

Included
Highlights Integrations: Linear, Jira integrations

Included
Highlights Help Center, Knowledge Base: included

Included
Highlights Customer cards: included

Included
AI features AI workflows: included

Included
AI features Sidekick AI assistant: included

Included
Highlights Support: Email + chat

Included

SleekFlow

Pro AI — Monthly

Highlights Monthly active contacts (MACs): Starts from 500

Included
Highlights User accounts: Includes 3 user accounts

Included
Highlights Broadcast: Unlimited

Included
Highlights Flow Builder usage: Unlimited

Included
Highlights Contact storage: Unlimited

Included
Highlights Inbox (Web & mobile): Included

Included
Highlights AI Agent: Included

Included
Highlights Dedicated Onboarding: 60-day

Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Plain

August 27, 2026 Source
- Foundation — default: USD 35 monthly · USD 35 / month with annual commitment

SleekFlow

August 27, 2026 Source
- Pro AI — Monthly: USD 99 monthly · USD 79 / month with annual commitment