What Mross costs
Two fees, and they are two different kinds of fee: one is your firm's overhead and one is a cost of a particular client's matter. Every price below is read out of the published terms record itself rather than retyped beside it, so the price on this page and the price a firm consents to cannot drift apart. The one figure below that is not a price — the CJA maximum the per-matter fee is set against — is not part of the offer and carries its source where it appears.
Showing version 2026-08.2, effective 2026-08-10. A published version is immutable — changing a price means publishing a new one, because the text a firm agreed to has to remain producible long afterwards. This is the version on sale today.
What is being sold is a paralegal, not a lawyer. Mross prepares the work; a licensed attorney signs and sends it.
Mross Federal — per attorney, per month
Small on purpose. California COPRAC's 2026 guidance treats a flat subscription for general capability as firm overhead, absorbed from the lawyer's own margin rather than billed to a client — so it has to sit inside a firm's software budget rather than inside a case budget. Its job is commitment.
each time a matter is opened
It is a per-use fee incurred on a specific matter. Under California COPRAC guidance it may be disclosed in your engagement letter and passed through to the client at actual cost; no markup is applied.
what the model provider charged Mross, passed through with a 30% margin
Most of Mross costs nothing to run. Everything computed deterministically — the Guidelines engine, the worksheet, the sentencing memorandum, the deadline register, the Desk and every export — makes no model call at all. Extraction, the chronology, the plea reader, the proposed attributions, the colloquy's passage-reading half, the PSR unsupported-assertion check and research synthesis do, and those are charged at what the provider charged plus 30%.
There is no cap, so this part of the bill is not a fixed figure — it varies with how much work you run. Every call is itemised on your billing page with the date, what it was for, which matter, the model, the tokens, what it cost upstream and what you were charged, so the total is one you can add up yourself. A call whose provider states no price is charged nothing and is itemised as such. Prohibiting model processing on a matter stops every path that would call a model about that defendant, and costs nothing thereafter.
What the per-matter fee is set against. USD 250.00 is 1.8% of the USD 13,800.00 compensation maximum the Criminal Justice Act sets for a non-capital felony case at trial — what the federal government itself budgets for an entire appointed defence. That maximum is a soft cap rather than a ceiling: compensation beyond the statutory thresholds needs the approval of the chief judge of the circuit or a delegate, so it can be exceeded case by case.
Guide to Judiciary Policy §230.23.20, retrieved from uscourts.gov.
- This is a recurring subscription. It renews automatically each month until you cancel. Your card is charged the subscription fee at the start of each monthly period. Read that alongside the note below: no payment processor is connected to Mross today, so nothing is collected under it. Terms sets out the renewal, cancellation and refund terms in full, as published.
- The per-matter fee is charged once, when the matter is opened, and opening the same matter again never bills twice — the charge is idempotent per matter, so a retried request records nothing new.
- A billing problem never blocks a matter. The matter opens whether or not the fee can be charged, and a charge that was attempted and failed is written to the audit log rather than retried against the matter. A firm that has hit a billing problem still has a client with a court date.
- Nothing is charged that was not agreed to. The amount comes from the consented terms rather than from whatever the code asks for, and if the terms have changed since consent was given, charging is refused until the firm agrees to the new version.
- Cancelling stops future charges immediately, in one click, in the same place the subscription started. 15 U.S.C. §8403(3) requires a simple mechanism, and a cancellation you have to ask a person for is not one.
Open an account as a law firm or as someone representing themselves. Creating one takes no payment and starts no subscription — the fees above begin when a subscription does, and the terms are on the table before that.