A hundred-eyed review of outside-counsel invoices. Argus parses every signed engagement letter, reads every invoice line, and flags every variance with the exact clause cited.
If you run an in-house legal team spending $5M to $25M a year on outside counsel, you already know the math: you negotiate engagement letters and billing guidelines, and then you trust the firm to follow them. Most of the time they do. Some of the time they don't.
The tools built for this problem were designed for Fortune 500 legal departments. They require LEDES-formatted submissions, take months to configure, and depend on your firms playing along. If your firms send PDFs by email and your engagement letters live in Docusign, those tools don't fit.
There's a better answer.
When an invoice arrives, Argus pulls the signed engagement letter, the rate card, and the billing guidelines from wherever they live. It extracts the structured terms a senior legal ops lead would use. Then it reads the invoice line by line. Every variance gets flagged with the exact clause it violates, an AI confidence score, and a one-page evidence pack.
| Timekeeper | Description | Hours | Rate | Amount |
|---|---|---|---|---|
Murphy, J. Partner | Conference call re: settlement strategy | 1.20 | 925.00 | $1,110.00 |
Chen, A. Senior Associate | Drafted reply brief; legal research; revisions; review opposing motion; conferences with team; further drafting; finalize edits | 8.40 | 640.00 | $5,376.00 |
Patel, R. Contract Attorney | Document review - production batch 14 | 6.00 | 475.00 | $2,850.00 |
Murphy, J. Partner | Travel - first class, NYC→SFO | - | - | $1,840.00 |
Chen, A. Senior Associate | Deposition prep with witness | 3.50 | 640.00 | $2,240.00 |
Legacy e-billing platforms were built around LEDES formatting and structured rule configuration. They want your firms to submit invoices their way. Argus reads your signed engagement letters and billing guidelines as the source of truth. No rule translation. No format mandate.
Your top three firms might send LEDES. Your other thirty send PDFs by email. Argus handles both natively - every firm, every format, no pushback to navigate. An AI invoice reviewer that doesn't make your firms change their workflow.
Every flag carries an AI confidence score and a citation to the specific contract clause it's based on. Your reviewers see the evidence. Your firms see the same evidence. Documented AI governance from day one, not bolted on.
Forward your billing email to a private Argus address, or connect Docusign Navigator, iManage, SharePoint, or Box. We recommend connecting two sources: one for invoices, one for engagement letters.
Upload your engagement letters, rate cards, billing guidelines. Word, PDF, signed Docusign envelopes - whatever format they live in. Argus parses them once and asks you to confirm.
Argus reads each incoming invoice and reconciles it against the contracts agentically. No rule configuration to maintain. When letters change, you upload the new version and the system adapts.
You get a dashboard of flagged variances with cited clauses, evidence packs, and a one-click dispute action. Approved invoices export to your AP system as CSV or via API.
Industry research shows that 56% of legal invoices contain billable errors and only 20% of matters stay within budget. Recovery rates from professional bill review programs typically range from 7% to 10% of outside counsel spend.
For a mid-market legal team spending $10M annually on outside counsel, that's an illustrative $700,000 to $1,000,000 in recovered spend - against an Argus subscription that ranges from $40,000 to $90,000.
The ROI calculator on the right uses conservative industry benchmarks, not customer outcomes. We're pre-revenue. When we have customer numbers, we'll publish them.
This is deliberate.
Argus does outside counsel invoice review and the operations around it. We do that one job precisely.
If you're looking for any of the categories on the right, we have opinions on who to use. Ask us.
Every customer starts with a 90-day pilot at $20k–$30k with written success criteria agreed before kickoff. Pilot fee credits toward your annual subscription on conversion.
The first five customers receive 50% off year-one in exchange for a written case study, two reference calls, and feedback sessions. $750M – $3B revenue, sitting Head of Legal Ops.
OC spend above $25M, multi-entity deployments, single-tenant cloud, or non-standard data residency are quoted separately. Reach out.
Argus is built by Fluidlabs OÜ, a Docusign implementation partner that has spent the last several years inside corporate agreement workflows.
We watched mid-market in-house legal teams pay millions to outside counsel every year with no realistic way to verify what they were charged - the existing tools were built for the Fortune 500 and required months of rule configuration most teams couldn't afford.
The technology to fix this exists now. Modern AI systems can extract and apply the structured terms a senior legal ops lead would use. The legacy e-billing category was architected before any of that was possible. We built Argus from the ground up around it.
We're starting with corporate legal because the pain is sharp, the buyer is reachable, and our engineering and Docusign distribution match the problem.
A 30-minute demo with one of the founders. We'll walk you through Argus on a synthetic engagement letter and three real-world invoice formats.
No deck. No pitch theater. You'll know in 30 minutes whether this is for you.