Letterbook vs Open (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Open
From $0.99/mo against from $50/mo
Free plan
Tie
Neither has one
Higher rating
Open
3.8 against 4.1
Same job?
Yes
Both are Customer Support tools

Side by side

Compared on	Letterbook	Open
Our rating	3.8	4.1Better
Starts at	$50/mo	$0.99/moBetter
Free plan	No	No
Category	Customer Support	Customer Support
Plans	From $50/mo	From $0.99/mo
Key features	Playbook-driven auto-resolution for common support scenarios Direct connections to inbox, product database, and Stripe Contact-center-style review interface for AI-drafted replies No per-resolution or usage-based surprise fees Founder-defined scenarios instead of generic ticket-routing rules	Agent 5 automation across voice, chat, email and messaging One training pass covering every channel Clean handoff to human agents Zendesk, Intercom, Salesforce and Freshdesk integrations Full visibility into how the AI decided
Pros	Flat monthly pricing avoids the per-resolution fee structures competitors use Founders' prior product experience (scaling to 100,000 users) lends practical credibility Playbook approach gives founders direct control over how AI responds to customers	$0.99 per resolution aligns the vendor with the outcome, not headcount Voice and messaging in the same product as chat and email Decision visibility rather than a black box
Cons	No permanent free tier, only a 7-day trial $50-$200 monthly range may still be a stretch for pre-revenue startups Auto-resolution quality depends entirely on how well a team writes its playbooks	Automation rate and accuracy are vendor figures with no stated method Per-resolution pricing gets expensive at high volume Resolution is defined by the vendor, not the customer
Company	Letterbook, founded 2023	OpenChat, Inc.

Prices come from each vendor's pricing page, last checked 20260818. Check the vendor before you buy.

FAQ

Questions people ask

Is Letterbook better than Open?

In our reviews Letterbook scores 3.8 and Open scores 4.1. The better pick depends on the job. Letterbook: AI-native customer support platform that drafts and resolves tickets using a company's own playbooks. Open: Charges 99 cents per resolved ticket instead of per seat.

Which is cheaper, Letterbook or Open?

Open has the lower starting price: from $50/mo for Letterbook and from $0.99/mo for Open.

Do Letterbook and Open have free plans?

Neither lists a free plan.

More comparisons

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Open compared with

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