Letterbook vs Tars

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.

Letterbook

See full pricing history

USD · US · source: www.letterbook.ai

Plan	Pricing	Charged by	Offer type
Starter — default	USD 50 monthly · USD 50 / month with annual commitment $50 per month	Flat · per month	Standalone · Fixed
Growth — default Highlighted	USD 200 monthly · USD 200 / month with annual commitment $200 per month	Flat · per month	Standalone · Fixed
Enterprise — default	Contact sales Let's talk per month	Flat · per month	Standalone · Contact sales

Tars

See full pricing history

USD · US · source: hellotars.com

Plan	Pricing	Charged by	Offer type
Freemium	Free $0 /month	Flat · /month	Standalone · Free
Premium	USD 499 monthly $499 /month	Flat · /month	Standalone · Fixed
Enterprise	Contact sales Custom Pricing	Flat	Standalone · Contact sales

What each plan includes

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

Letterbook

Starter — default

Highlights Seats: 3 seats

Included
Highlights Tickets per month: 300 tickets / month

Included
Highlights Integrations: Integrate your database & Stripe

Included
Highlights Inbox: Unified inbox for all your channels

Included

Growth — default

Highlights Seats: 10 seats

Included
Highlights Tickets per month: 1,000 tickets / month

Included
Highlights Channels and integrations: All channels and integrations

Included
Highlights Support: Priority support

Included

Enterprise — default

Highlights Seats: Custom seats

Included
Highlights Tickets per month: 3,000+ tickets / month

Included
Highlights Security: SSO & SAML

Included
Highlights Account management: Dedicated account manager

Included

Tars

Freemium

Highlights Conversations per month: 50

Included
Highlights Basic LLM models: Included
Highlights Knowledge Bases: 5

Included
Highlights Access to help guides: Included
Highlights Community support: Included
Highlights Data encryption: Included
Highlights Data retention: 1 month

Included

Premium

Highlights Conversations required per month: 500 1K 2K 5K 10K

Included
Highlights Advanced LLM models: Included
Highlights Knowledge Bases: 20

Included
Highlights Live Chat support: Included
Highlights ISO & SOC 2 Compliance: Included
Highlights Data retention: 12 months

Included

Enterprise

Highlights Configurable volume: Included
Highlights White-glove onboarding: Included
Highlights Knowledge Bases: Unlimited

Included
Highlights Custom integrations: Included
Highlights Dedicated account manager: Included
Highlights Role-based access control: Included
Highlights HIPAA, ISO, & SOC 2 Compliance: Included
Highlights SSO: Included
Highlights Configurable data retention: 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.

Letterbook

August 27, 2026
Official pricing page
- Starter — default: USD 50 monthly · USD 50 / month with annual commitment
- Growth — default: USD 200 monthly · USD 200 / month with annual commitment
- Enterprise — default: Contact sales

Tars

September 21, 2026
Official pricing page
- Freemium: Free
- Premium: USD 499 monthly
- Enterprise: Contact sales
August 27, 2026
Official pricing page
- Freemium — default: Free
- Premium — default: USD 499 monthly · USD 414.17 / month with annual commitment