On a 2,000-document privilege set, manual privilege log generation runs $20,000–$30,000 in entry fees alone. AI-assisted generation drafts those entries automatically — with human QC replacing the line item.
A traditional privilege log entry requires a reviewer to work through each document methodically. The steps are not optional — they are required to produce a log that will survive a challenge. The reviewer must:
At a billing rate of $35–$60/hr for contract reviewers and 15–30 minutes per entry, the per-entry cost ranges from $8–$30 depending on document complexity, privilege basis ambiguity, and the reviewer’s familiarity with the matter. Legacy vendors quote $5–$15 per entry in their rate schedules; what varies — and what is rarely spelled out in the initial quote — is whether that rate includes the privilege review itself (the attorney time reading the document and making the call) or only the log entry (the administrative step of recording the decision). The distinction is material. It is also the source of most of the disagreement clients have with their eDiscovery vendors at invoice time.
The per-entry rate is typically quoted for the logging step alone. The privilege review — which is the labor-intensive work of actually reading the document, applying the legal standard, and deciding whether the privilege claim is defensible — is billed separately at a per-document review rate. This means a client reviewing 2,000 documents for privilege is paying for the document review and the log entry as two separate line items on two separate invoices, covering the same underlying event.
On a 100 GB benchmark matter with 2,000 privilege documents, the privilege log generation fee at $10/entry is $20,000. At $15/entry, it is $30,000. This fee arrives in addition to the privilege review fee, which on a per-document basis typically runs $4–$8/doc for first-pass privilege screening — adding another $8,000–$16,000 for 2,000 documents. Stack those together: $12,000 in privilege review plus $20,000 in log generation equals $32,000 for a 2,000-document privilege set.
That is the third-largest line item in the traditional vendor quote, after first-pass responsiveness review and project management. It is also the line item that scales most directly with the size of the privilege set — which means it is the one most likely to blow past the estimate if the privilege rate (the percentage of reviewed documents that are withheld) turns out to be higher than projected. A matter that estimates a 5% privilege rate on 40,000 reviewed documents produces 2,000 privilege log entries. If the actual privilege rate is 8%, the log grows to 3,200 entries and the fee increases by $12,000–$18,000 with no advance notice.
| Privilege log component | Traditional cost | AI-augmented cost |
|---|---|---|
| Privilege review (2,000 docs at $6/doc) | $12,000 | Included |
| Log entry generation (2,000 entries at $10/entry) | $20,000 | Included |
| Senior attorney adjudication (close calls) | Separate (not itemized) | Separate (attorney time) |
| Total | $32,000+ | $0 additional |
Auto-generated privilege log entries use the document’s extracted text, metadata (sender, recipient, date, subject line), and AI privilege classification to draft a description of the document’s nature without human drafting. The system identifies the privilege basis from the document content — attorney as sender or recipient, subject matter consistent with legal advice, work-product indicators such as draft language or litigation context — populates the entry fields from metadata, and generates a description that reflects the document’s subject matter at the appropriate level of specificity.
The AI-generated draft entry is then presented to a human reviewer for QC. The reviewer reads the entry, checks the description for accuracy, flags any close calls for senior review, and approves or edits before the entry is finalized. The human labor shifts from drafting to reviewing. That shift is both faster and legally safer: a reviewer who is checking a completed entry for accuracy and privilege basis correctness works faster than one who is constructing the entry from scratch, and the review step provides the human judgment layer that courts expect to see behind privilege log certifications.
The time savings compound across a large privilege set. A human reviewer drafting entries from scratch takes 15–30 minutes per entry. A reviewer checking AI-generated entries typically takes 3–5 minutes per entry for straightforward documents and 10–15 minutes for complex ones. On a 2,000-entry privilege log, that is the difference between 500–1,000 hours of reviewer time and 100–200 hours. The labor cost drops by 70–80% without any reduction in legal defensibility — because the human judgment that makes a log defensible is still in the loop, at the QC step rather than the drafting step.
AI generation does not eliminate attorney judgment from privilege log preparation, and it is important to be precise about what remains. Senior attorney review is still required for several categories of documents where the privilege analysis is genuinely complex. Ambiguous privilege basis: communications with in-house counsel that mix legal advice with business discussion, where the predominant purpose of the communication is not clearly legal, require a fact-specific analysis that AI classification cannot reliably resolve. Waiver-risk analysis: documents shared with third parties, forwarded to non-privileged recipients, or disclosed in other proceedings require a careful evaluation of whether the privilege has been waived — an analysis that depends on facts outside the document itself.
Categorical log entries that describe families of documents rather than individual items — a common format for voluminous privilege productions — require a different drafting approach than entry-by-entry logging and typically involve senior attorney review of the categorization itself. Description risk: any entry where an accurate description of the document’s subject matter would, if included in the log, effectively disclose the privileged information that the entry is meant to protect requires a careful drafting judgment call that AI generation cannot make without human oversight.
These categories represent the legitimate remaining labor costs in AI-augmented privilege log preparation. They are also not the costs that the $10–$15/entry fee is billing against. That fee covers the drafting of straightforward entries from documents where the privilege basis is clear, the parties are identified, and the description can be generated from the document content without special legal analysis. That is the bulk of most privilege logs. The genuinely complex entries — which require attorney time — should be billed separately as attorney time. Bundling the complex entries into the same per-entry fee as the straightforward ones, while also charging separately for the privilege review, is how the math gets to $32,000 for 2,000 documents.
Privilege log fees are rarely prominently featured in initial vendor quotes. The per-entry rate appears in the vendor’s rate schedule, typically on page four or five of a six-page document, formatted as a line item in a table alongside dozens of other rates for services that may or may not be used on the matter. The total privilege log cost is not calculable at engagement because the total depends on the privilege rate — how many of the reviewed documents are ultimately withheld — which is not known until the review is substantially complete.
This creates a structural information asymmetry. The vendor knows that privilege log fees are reliably material on substantial matters — internal data on privilege rates across matters tells them that. The client does not know this until the invoice arrives. By that point, the client has already committed to the platform, completed the review, and has no leverage to negotiate the per-entry rate retroactively. The privilege log is one of the most reliably high-volume line items in any substantial commercial matter, and vendors who quote it on a per-entry basis are preserving upside revenue that is not visible at engagement.
The practical protection is to ask specific questions before committing to a platform. Asking “Can you put your privilege log methodology in writing, including whether it is AI-assisted and what the per-entry rate covers?” is the question that surfaces the answer. A vendor whose privilege log workflow is manual will typically describe it as such when asked directly. A vendor whose per-entry rate covers only the logging step but not the review will also acknowledge this when the question is explicit. Those answers change the all-in cost calculation significantly — and they are answers that should be collected as part of the vendor evaluation process, before the matter begins.
Asking vendors “Can you put your privilege log methodology in writing?” is the fastest way to learn whether you are paying twice for the same work — once for the review and once for the typing.