Plain vs Warmly

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	USD 35 / month with annual commitment $35 /month 1 seat + $35/additional seats. $35/month, billed yearly	Seat · 1 seat + $35/additional seats	Standalone · Fixed
Horizon	USD 299 / month with annual commitment $299 /month 3 seats + $99/additional seats. $299/month, billed yearly	Seat · 3 seats + $99/additional seats	Standalone · Fixed
Frontier	Contact sales Custom Flexible pricing suited for you	Other	Standalone · Contact sales

Warmly

See full pricing history

USD · US · source: www.warmly.ai

Plan	Pricing	Charged by	Offer type
AI Web-Deanonymization	USD 1625 monthly · USD 833.33 / month with annual commitment AI Web-Deanonymization — $4875/quarter or starting at $10000/year; from 10K credits/month	Usage · from 10K credits/month; quarterly and annual commitments, normalized per month	Standalone · Starting at
Inbound Chat	USD 2166.67 monthly · USD 1666.67 / month with annual commitment Inbound Chat — $6500/quarter or starting at $20000/year; from 10K credits/month	Usage · from 10K credits/month; quarterly and annual commitments, normalized per month	Standalone · Starting at
AI Inbound Autopilot Highlighted	USD 3250 monthly · USD 2500 / month with annual commitment AI Inbound Autopilot — $9750/quarter or starting at $30000/year; from 10K credits/month	Usage · from 10K credits/month; quarterly and annual commitments, normalized per month	Standalone · Starting at

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

AI features Credits included: 2,000/mo

Included
Users User seats: Up to 5

Included
Channels Slack: 25 channels

Limited
Channels Email: 2 addresses

Limited
Channels In-app channels: Included
Channels Microsoft Teams: Excluded
Channels Discord: Excluded
AI features Ari AI agent: included

Included
AI features Sidekick AI assistant: Included
Extensibility Linear, Jira integrations: Included
Help Center Help Center, Knowledge Base: 1

Limited
Help Center Ask AI: 1

Limited
Help Center Customer inbox: 1

Limited
Data-driven support Customer cards: Included
Data-driven support Customer card realtime: 12h cache

Limited
Extensibility AI workflows: Up to 5

Limited
Onboarding Onboarding process: Self-serve

Included
Onboarding Plain support: Email + chat

Included
Extensibility SLAs and Business hours: Excluded
Extensibility Escalation paths: Excluded
Extensibility CRM integrations: Excluded
AI features Reporting themes: Excluded
AI features AI suggested responses: Excluded
Data-driven support Reporting: 7 days

Limited
AI features Lookup with Cursor: Excluded
Services and compliance SSO and SCIM: Excluded
Onboarding Dedicated CSM: Excluded

Horizon

AI features Credits included: 15,000/mo

Included
Users User seats: Up to 10

Included
Channels Slack: Unlimited

Included
Channels Email: 10 addresses

Limited
Channels Microsoft Teams: Included
Channels Discord: Excluded
Highlights Everything in Foundation: Included
Extensibility SLAs and Business hours: Included
Extensibility Escalation paths: Included
Extensibility CRM integrations: Included
AI features Reporting themes: Included
AI features AI suggested responses: Included
Onboarding Priority support via Slack: Included
Help Center Help Center, Knowledge Base: Unlimited

Included
Help Center Ask AI: Unlimited

Included
Help Center Customer inbox: Unlimited

Included
Extensibility Workflows: Unlimited

Included
Data-driven support Customer card realtime: 15s

Included
Data-driven support Reporting: All time

Included
Onboarding Onboarding process: Self-serve

Included
Onboarding Plain support: Slack, email + chat

Included
AI features Lookup with Cursor: Excluded
Services and compliance SSO and SCIM: Excluded
Onboarding Dedicated CSM: Excluded
Onboarding White glove onboarding: Excluded

Frontier

AI features Credits included: Custom

Included
Users User seats: Custom

Included
Channels Slack: Unlimited

Included
Channels Email: 25 addresses

Limited
Channels Discord channels: Included
Highlights Everything in Horizon: Included
AI features Lookup with Cursor: Included
Extensibility Custom workspaces: Included
Services and compliance Custom contracting: Included
Services and compliance Advanced security: Included
Services and compliance SSO and SCIM: Included
AI features Custom AI + bring your own agent: Included
Onboarding Dedicated CSM + white glove onboarding: Included
Onboarding Onboarding process: White glove

Included
Onboarding Plain support: Dedicated CSM

Included
Help Center Help Center, Knowledge Base: Unlimited

Included
Help Center Ask AI: Unlimited

Included
Help Center Customer inbox: Unlimited

Included
Extensibility Workflows: Unlimited

Included
Data-driven support Customer card realtime: 15s

Included
Data-driven support Reporting: All time

Included

Warmly

AI Web-Deanonymization

Plan card Plan focus: See who's on your site

Included
Plan card Credits: From 10K/month

Limited
Plan card Website visitors: Contacts + companies

Included
Plan card ICP filtering: Included
Plan card Real-time alerts: Included
Plan card Slack alerts: Included
Plan card Lead routing: Included
Plan card CRM sync: Included
Plan card SEP / Webhook integrations: Included
Plan card Retarget via email, LinkedIn, and ads: Included

Inbound Chat

Plan card Plan focus: Catch live visitors

Included
Plan card Credits: From 10K/month

Limited
Plan card Website visitors: Contacts + companies

Included
Plan card ICP filtering: Included
Plan card Real-time alerts: Included
Plan card Slack alerts: Included
Plan card Lead routing: Included
Plan card CRM sync: Included
Plan card SEP / Webhook integrations: Included
Plan card Retarget via email, LinkedIn, and ads: Included
Plan card AI Chatbot: 1 AI Studio Agent

Included
Plan card Warm Calling: Live chat

Included
Plan card Warm Offers: Included
Plan card Chat metrics: Included
Plan card Automated email follow-up: Included

AI Inbound Autopilot

Plan card Plan focus: Inbound that runs itself

Included
Plan card Credits: From 10K/month

Limited
Plan card Website visitors: Contacts + companies

Included
Plan card ICP filtering: Included
Plan card Real-time alerts: Included
Plan card Slack alerts: Included
Plan card Lead routing: Included
Plan card CRM sync: Included
Plan card SEP / Webhook integrations: Included
Plan card Retarget via email, LinkedIn, and ads: Included
Plan card AI Chatbot: 1 AI Studio Agent

Included
Plan card Warm Calling: Live chat

Included
Plan card Warm Offers: Included
Plan card Chat metrics: Included
Plan card Automated email follow-up: Included
Plan card AI Studio Agents and Autopilot Agent: Unlimited AI Studio Agents

Included
Plan card AI goal-setting, qualification, and decision-making: Included
Plan card AI slide generation: Mini-demo

Included
Plan card AI-written chat follow-up: Included
Plan card Auto email generation and follow-up: Included
Plan card Auto-learn and improve AI chat: Included

How their prices changed

Each date shows when a public price was observed, not when it took effect. An archived region or currency can differ, so a currency change is not necessarily a price increase.

Plain

September 21, 2026
Official pricing page
- Foundation: USD 35 / month with annual commitment
- Horizon: USD 299 / month with annual commitment
- Frontier: Contact sales
August 27, 2026
Official pricing page
- Foundation — default: USD 35 monthly · USD 35 / month with annual commitment

Warmly

August 29, 2026
Official pricing page
- AI Web-Deanonymization: USD 1625 monthly · USD 833.33 / month with annual commitment
- Inbound Chat: USD 2166.67 monthly · USD 1666.67 / month with annual commitment
- AI Inbound Autopilot: USD 3250 monthly · USD 2500 / month with annual commitment