The short answer
Clark and Trullion are both audit & risk tools. On published figures, Trullion leads on larger reported customer base (3,000+ companies vs 35+ CPA firms, including CliftonLarsonAllen and Aprio). Best fit: Clark for CPA firms short on audit staff during busy season and Trullion for accounting firms running repeat audit workflows across many engagements. Shortlist on fit, then compare quotes for the same scope.
Which should you choose?
Choose Clark if…
- you're among CPA firms short on audit staff during busy season
- you're among firms that want AI to own whole engagement areas, not just extraction
- you're among EBP and government audit practices looking to add capacity
- this Trullion drawback matters to you: pricing is not publicly itemized, requiring a sales process before buyers can compare total cost
Choose Trullion if…
- you're among accounting firms running repeat audit workflows across many engagements
- you're among finance teams automating lease accounting and revenue-contract review with source-linked evidence
- you're among internal-audit groups expanding transaction matching and exception review beyond manual samples
- you want a larger reported customer base (3,000+ companies vs 35+ CPA firms, including CliftonLarsonAllen and Aprio)
- this Clark drawback matters to you: no public pricing
At a glance
| Attribute | Clark | Trullion |
|---|---|---|
| Starting price | Custompricing as of Nov 2026 | Custompricing as of Oct 2026 |
| Pricing model | Annual subscription, quote-based | Annual subscription, quote-based |
| Free trial | No public free trial is listed; book a demo. | No public free trial or self-serve plan is listed. |
| Founded | Not disclosed (formerly uiAgent) | 2019 |
| Headquarters | New York, NY | New York, NY |
| Funding | $16M total | $34M raised |
| Frameworks | SOC 1 Type 2, SOC 2 Type 2, ISO 27001; supports HIPAA and GDPR | GAAP, IFRS, ASC 606, ASC 842, IFRS 16 |
| Coverage | US CPA firms | GAAP, IFRS, ASC 606, ASC 842, IFRS 16 |
| Integrations | SharePoint, Box, Google Drive, QuickBooks, Slack, Teams, Excel, email | NetSuite, Suralink, Thomson Reuters Guided Assurance, Inflo, Validis, Open API |
| Customers | 35+ CPA firms, including CliftonLarsonAllen and Aprio | 3,000+ companies Leads |
| Rating | Not published | 4.7/5 on G2 (57 reviews) |
| Focus | AI audit staff for CPA firms | AI audit and accounting automation |
Figures are as published by each vendor or review site on the verification date. "Leads" marks the stronger published figure; it isn't a recommendation on its own.
Where each one leads
- Trullion: larger reported customer base3,000+ companies vs 35+ CPA firms, including CliftonLarsonAllen and Aprio
Pricing compared
Clark pricing
Custom · pricing as of Nov 2026
Plan-level pricing not published.
Clark does not publish prices or plans. Firms book a demo and receive a quote. The 40% time savings figure on Clark's site is described as illustrative, not a measured average.
Free trial: No public free trial is listed; book a demo.
Trullion pricing
Custom · pricing as of Oct 2026
- CustomQuote
Audit Suite, lease accounting, revenue assurance, workflows, AI agents, integrations, implementation, and support scoped to the buyer.
Trullion does not publish a rate card. Pricing is scoped around engagement volume, modules, implementation, integrations, and support, with unlimited seats described for its firm-oriented model. Third-party listings also describe pricing as custom.
Free trial: No public free trial or self-serve plan is listed.
Key capabilities
Clark
- Clerks (AI audit employees). Autonomous agents assigned to engagement areas that collect documents, run tests, draft workpapers and chase client follow-ups, with CPAs retaining review and sign-off.
- Ava AI teammate. The assistant firms interact with to assign work, review output and ask questions about an engagement.
- Material Intelligence. Clark's agent harness, document processing and multi-layer memory that keeps context across documents and over the course of an engagement.
- Excel add-in. Brings Clark's extraction and testing into Excel workpapers so staff can stay in their spreadsheets.
- Integrations and UI automation. Connects to SharePoint, Box, Google Drive, QuickBooks, Slack, Teams, Excel and email, and uses UI automation for client sites without APIs.
- Peer Review Guarantee. Clark pays capped damages and refunds that client's fees if an Ava extraction error or miss becomes a peer review finding; team overrides are excluded.
- Specialty audit coverage. Clark markets Clerks for employee benefit plan (EBP) audits and for firms expanding into government audits.
Trullion
- Financial statement validation. Checks footing, cross-footing, consistency, versions, prior-year changes, and statement structure while producing review-ready workpapers.
- Data extraction. Extracts text, tables, and custom fields from PDFs, contracts, leases, and invoices into structured data.
- Data matching. Supports vouching, tracing, transaction matching, accounts-payable matching, and other substantive-testing procedures.
- Lease accounting. Extracts and manages lease data with traceable calculations for ASC 842 and IFRS 16 portfolios.
- Revenue assurance. Extracts performance obligations and revenue terms from contracts and compares them with billing, CRM, and ERP data.
- Trulli AI assistant. Answers questions against uploaded evidence and accounting guidance with supporting source context.
- Knowledge layer. Combines internal guidelines, external standards, and institutional knowledge for governed accounting workflows.
Pros and cons
Clark
Pros
- Clerks own engagement areas end to end, from document requests to draft workpapers
- Peer Review Guarantee puts money behind extraction accuracy
- SOC 1 Type 2, SOC 2 Type 2 and ISO 27001, with no training on customer data
- Named mid-market and top-25 CPA firm customers
Cons
- No public pricing
- Young company with $16M raised in total
- The 40% time savings figure is illustrative, not a measured average
- Built for US CPA firms; not aimed at internal audit teams
Trullion
Pros
- Source-linked outputs and recalculation trails make AI-assisted work easier to inspect and reperform.
- The suite combines extraction, matching, financial statements, leases, revenue, and audit procedures.
- Engagement-volume pricing with unlimited seats can fit firms with large reviewer populations.
- NetSuite, SFTP, Open API, and audit-workflow connections support existing accounting environments.
Cons
- Pricing is not publicly itemized, requiring a sales process before buyers can compare total cost.
- AI extraction and interpretation require review for unusual contract language and complex transactions.
- The broad module set can require methodology configuration, implementation, and data migration.
- Public review volume is modest compared with established audit and lease-accounting vendors.
How they're similar
- Both are listed in our audit & risk directory.
- Both use quote-based pricing, so the final price depends on scope and negotiation.
- Both are headquartered in New York, NY.
How they differ
- Focus
- Clark: AI audit staff for CPA firms
- Trullion: AI audit and accounting automation
- Founded
- Clark: Not disclosed (formerly uiAgent)
- Trullion: 2019
- Funding
- Clark: $16M total
- Trullion: $34M raised
- Listed only for this tool
- Clark: Audit automation, AI agents, Workpapers, CPA firms, Employee benefit plan audits, Government audits +2 more
- Trullion: ASC 842, IFRS 16, ASC 606, IFRS 15, GAAP, IFRS +6 more
Frequently asked questions
Is Clark cheaper than Trullion?
+
The published prices can't be compared directly (they are quote-based, use different billing units, or aren't published), so request quotes for the same scope. Clark: Custom (annual subscription, quote-based). Trullion: Custom (annual subscription, quote-based). (Clark pricing pricing as of Nov 2026; Trullion pricing pricing as of Oct 2026.) Total cost depends on plan, company size and add-ons.
Which is better for startups, Clark or Trullion?
+
Clark's published positioning doesn't single out startups; its first best-fit group is "CPA firms short on audit staff during busy season". Trullion's published positioning doesn't single out startups; its first best-fit group is "Accounting firms running repeat audit workflows across many engagements". Neither answer replaces a quote for your headcount and scope.
Can I switch from Clark to Trullion?
+
Yes. They are separate products, so switching means setting up Trullion and reconnecting your systems. Check your Clark contract term and renewal date before you commit. Data migration tooling isn't covered in our sources, so ask Trullion whether it can import your Clark data.
Does Clark or Trullion have more integrations?
+
Clark: SharePoint, Box, Google Drive, QuickBooks, Slack, Teams, Excel, email; Trullion: NetSuite, Suralink, Thomson Reuters Guided Assurance, Inflo, Validis, Open API. Vendor counts are self-reported and define "integration" differently, so check that the specific systems you use are supported.
How do Clark and Trullion reviews compare?
+
Clark: no rating in our data; Trullion scores 4.7/5 from 57 reviews on G2. Ratings are third-party review-site data, not our own testing.
Do Clark and Trullion offer a free trial?
+
Clark: No public free trial is listed; book a demo. Trullion: No public free trial or self-serve plan is listed.
Go deeper
Clark
Audit & Risk
Trullion
Audit & Risk
Sources
Vendors change pricing and features often, so confirm with each vendor before buying. How we research
Clark
Last verified
Work at one of these companies or spot something out of date? Suggest a correction. We check every report against a public source and update the page, usually within a few days.