Coval vs Letterbook

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.

Coval

See full pricing history

USD · US · source: www.coval.ai

Plan	Pricing	Charged by	Offer type
Starter — monthly	USD 100 monthly · USD 80 / month with annual commitment $100 /mo Billed monthly	Flat · Billed monthly	Standalone · Fixed
Growth — monthly Highlighted	USD 500 monthly · USD 400 / month with annual commitment $500 /mo Billed monthly	Flat · Billed monthly	Standalone · Fixed

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

What each plan includes

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

Coval

Starter — monthly

Highlights Simulation minutes / mo: 100

Included
Highlights Monitored calls / mo: 1,000

Included
Highlights Trace retention: 30 days

Included
Highlights Seats: Unlimited

Included
Highlights Metrics per call: 10

Included
Highlights Voice models: Basic

Included
Highlights Support: Community + email support

Included

Growth — monthly

Highlights Simulation minutes / mo: 1,000

Included
Highlights Monitored calls / mo: 10,000

Included
Highlights Trace retention: 90 days

Included
Highlights Seats: Unlimited

Included
Highlights Projects: Unlimited

Included
Highlights Metrics per call: Unlimited

Included
Highlights Voice models: Advanced

Included
Highlights Support: Priority email + Slack channel

Included

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

How their prices changed

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

Coval

August 27, 2026 Source
- Starter — monthly: USD 100 monthly · USD 80 / month with annual commitment
- Growth — monthly: USD 500 monthly · USD 400 / month with annual commitment

Letterbook

August 27, 2026 Source
- 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