AI Contract Review Cost Calculator

Reviewing contracts with an LLM means feeding the whole document in and getting a structured risk summary back. Because a full agreement is tens of thousands of input tokens, the cost is dominated by what you send, not what the model writes.

Worked example

A ~25-page contract (~18K input tokens) summarised and risk-flagged, 40 contracts a day.

$0.0600 per request

~$72.00/month at 40 requests/day

Computed at today's verified prices (28 July 2026). Adjust the inputs below for your own numbers.

Estimate from your own document

Drop a typical document to estimate your cost

Your file is read in your browser and never uploaded. Nothing leaves your device.

Accepts PDF, DOCX, TXT. For cost estimation only — not legal advice. Confirm client-confidentiality and privilege obligations before sending matter data to any third-party model.

Processed in your browser · nothing uploaded. Turn off Wi-Fi after this page loads and it still works.

Prefer to enter numbers directly? Open the LLM API Cost Calculator.

Why this number isn't obvious

Vendors quote per-seat or per-document prices that hide the real driver: document length. A 25-page master services agreement costs many times more to process than a one-page NDA at the same model, so an average based on short docs will understate your bill.

For cost estimation only — not legal advice. Confirm client-confidentiality and privilege obligations before sending matter data to any third-party model.

Frequently asked questions

Why is contract review priced on input tokens?+

The contract itself is the input, and a long agreement is tens of thousands of tokens. The risk summary the model returns is short, so output cost is a rounding error next to input cost.

Can a cheaper model handle contract review?+

Often yes for first-pass flagging. Because the document carries the facts, a mid-tier model with a large context window frequently matches a flagship on catching obvious issues — retest on your own clauses before switching.

More Law Firms calculators

AI Legal Research Assistant Cost Calculator

Estimate the monthly cost of a retrieval-augmented (RAG) legal research assistant over your case and statute library at current prices.

AI E-Discovery Document Classification Cost Calculator

Estimate the cost of classifying and tagging e-discovery documents with an LLM at scale. Millions of short calls make per-call price decisive.

AI Client Intake Chatbot Cost Calculator

Estimate the monthly cost of an AI client-intake chatbot for a law firm website at current model prices. Volume and history handling drive the bill.

← All Law Firms AI cost calculators

Estimates for planning, not a quote. Pricing data last reviewed 28 July 2026.