FirstOps vs Lassie: dental payment posting compared (2026)
FirstOps vs Lassie for dental payment posting: published pricing, setup, how exceptions are handled, and practice management systems compared.
Lassie and FirstOps both take insurance payment posting off your team with software. Lassie began with enrolling practices in electronic payments and posting them automatically, and now describes itself as "AI that runs the doctor's office". FirstOps posts payments and checks eligibility, and tells your office each week what needs a person.
At a glance#
| FirstOps | Lassie | |
|---|---|---|
| What it is | Payment posting with eligibility checks, run by software agents and the FirstOps team | AI software for enrollment, electronic payments and automatic posting; expanding into running the front office |
| Published price | $750/mo under 250 claims; $249/mo + $2 per claim from 250 to 1,000; custom above | Not published; quoted after a demo |
| Setup | $500 one-time | Not published |
| Trial | 2 weeks free | Not published |
| Contract | Month to month | Not published |
| Practice management systems | Any; most customers run Dentrix Ascend, Open Dental or Curve | Ask Lassie for its current list |
| What needs a person | A weekly report: every write-off with its reason, and each denial worth disputing with what to send and by when | Ask Lassie how exceptions are handed back |
Lassie's description is from lassie.ai, October 2026.
The price question#
Lassie doesn't publish a price, so you will need a quote. When you get one, ask:
- Is it a percentage of collections, and of which collections: all insurance payments, or only those Lassie posts?
- Is there a setup fee per location?
- Is there a minimum, or a contract term?
- Which payers and payment types are included from day one?
Then compare the monthly total with FirstOps at your claim volume: $750 under 250 claims, or $249 plus $2 per claim. Use our pricing calculator, or read how to compare per-claim and percentage pricing.
When Lassie may be the better fit#
- You want one AI product across the front office, not only billing. Lassie is building toward that.
- Your main problem is getting payers onto electronic payments (EFT/ERA). That is where Lassie started.
When FirstOps is the better fit#
- You want to know the price before the demo. FirstOps publishes it, with a calculator.
- You want the exceptions explained, not just listed. Each week FirstOps sends what was posted, what was written off and why, and the short list of claims that need a person, with what to do.
- You see a lot of Medicaid. FirstOps posts Medicaid dental remittances today, including MassHealth, and reads recoupments and frequency-limit denials line by line.
- You want to try it first. Every plan starts with a 2-week free trial, month to month.
Frequently asked questions
How much does Lassie cost?
Lassie does not publish its pricing; it quotes after a demo. FirstOps publishes its price: $750 a month under 250 claims, or $249 a month plus $2 per claim from 250 to 1,000 claims.
What is the difference between FirstOps and Lassie?
Both automate dental insurance payment posting. FirstOps publishes flat, claim-based pricing with a free trial, adds eligibility checks, and sends a weekly report of every write-off and every denial worth disputing. Lassie is expanding into a broader AI product for the front office.
Can I switch from Lassie to FirstOps?
Yes. FirstOps works in your existing practice management system, so there is nothing to migrate. Setup connects your payers and posting rules; then you start with a 2-week free trial.