Letterbook vs ResolveAI

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

ResolveAI

See full pricing history

USD · US · source: resolveai.co

Plan	Pricing	Charged by	Offer type
Basic	USD 9 monthly $ 9 / Month	Flat · / Month	Standalone · Fixed
Enhanced	USD 29 monthly $ 29 / Month	Flat · / Month	Standalone · Fixed
Expert	USD 79 monthly $ 79 / Month	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.

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

ResolveAI

Basic

Highlights ChatGPT 3.5 turbo: Included
Highlights 20 training data sources Training sources are website pages, files, texts etc that are used to train the AI assistant with your data: Included
Highlights 500K training characters: Included
Highlights 2,000 AI messages / month: Included
Highlights Human live chat takeover: Included
Highlights WhatsApp, Messenger, Slack Integrate your chatbot with popular platforms: Included
Highlights Booking assistant Let AI schedule your meetings: Included
Highlights Custom AI persona Define chatbot persona and communication style to better align with your company brand and needs: Included
Highlights API based tools Remote data lookups & triggers during conversations: Included

Enhanced

Highlights ChatGPT 4 + ChatGPT 3.5 turbo: Included
Highlights Unlimited training data sources Training sources are website pages, files, texts etc that are used to train the AI assistant with your data: Included
Highlights 5M training characters: Included
Highlights 4,000 AI messages / month: Included
Highlights Human live chat takeover: Included
Highlights WhatsApp, Messenger, Slack Integrate your chatbot with popular platforms: Included
Highlights Booking assistant Let AI schedule your meetings: Included
Highlights Custom AI persona Define chatbot persona and communication style to better align with your company brand and needs: Included
Highlights API based tools Remote data lookups & triggers during conversations: Included

Expert

Highlights ChatGPT 4 + ChatGPT 3.5 turbo: Included
Highlights Unlimited training data sources Training sources are website pages, files, texts etc that are used to train the AI assistant with your data: Included
Highlights Unlimited training characters Using your own OpenAI API key, otherwise 10M character limit.: Included
Highlights Unlimited AI messages / month Using your own OpenAI API key, otherwise 6,000 messages/month limit.: Included
Highlights Human live chat takeover: Included
Highlights WhatsApp, Messenger, Slack Integrate your chatbot with popular platforms: Included
Highlights Booking assistant Let AI schedule your meetings: Included
Highlights Custom AI persona Define chatbot persona and communication style to better align with your company brand and needs: Included
Highlights API based tools Remote data lookups & triggers during conversations: Included

How their prices changed

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

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

ResolveAI

August 27, 2026 Source
- Basic: USD 9 monthly
- Enhanced: USD 29 monthly
- Expert: USD 79 monthly