Kira Systems
By Kira Systems (Litera)
Kira Systems is contract analysis software that uses machine learning to identify, extract, and summarize clauses and data points across large sets of legal documents, such as due diligence files in mergers and acquisitions or lease…
Definition
Kira Systems is contract analysis software that uses machine learning to identify, extract, and summarize clauses and data points across large sets of legal documents, such as due diligence files in mergers and acquisitions or lease portfolios. It is aimed at law firms and corporate legal teams that need to review hundreds or thousands of contracts quickly and consistently rather than reading each one manually. Kira was later acquired by Litera and is now sold as part of Litera's legal technology suite.
Overview
Contract review has historically been one of the most labor-intensive parts of legal work: associates and paralegals read through stacks of agreements looking for specific clauses, such as change-of-control provisions or termination rights, and manually log what they find. Kira Systems was built to speed up exactly this task by applying machine learning to recognize clause types and extract relevant data points regardless of how a given contract is worded or formatted. Mechanically, Kira uses trained models, called "smart fields," that have learned to recognize hundreds of common clause and provision types across contract families such as leases, credit agreements, and employment contracts. A user uploads a batch of documents, selects the relevant smart fields or provision set, and the system scans every document, highlighting matches and producing a structured summary table that a reviewer can then verify and export. Because the models generalize across varied contract language rather than relying on fixed keyword rules, Kira can find a clause even when it is phrased unusually, though a human reviewer still checks the output before it is relied upon. Within the legal technology landscape, Kira sits alongside other AI contract tools such as Evisort and ContractPodAi, but it is more narrowly focused on the due diligence and clause-extraction stage rather than full contract lifecycle management, which covers drafting, negotiation, and post-signature obligation tracking. Evisort and ContractPodAi position themselves as broader platforms that manage a contract's entire life, while Kira has historically been the specialist tool for the review phase, especially in M&A due diligence. In practice, Kira is used by corporate law firms during deal due diligence, by in-house legal teams auditing large contract portfolios for regulatory or risk purposes, and by real estate and finance teams reviewing lease or loan agreements at scale. A typical project involves loading a data room of hundreds of contracts, running the relevant provision set, and having reviewers confirm and annotate the extracted results before they go into a due diligence report. The main limitation is that Kira's smart fields are trained on the clause types built into the product or custom-trained by a firm, so an unusual or highly specialized contract type may not be covered out of the box and requires additional model training. It also still requires legal judgment to interpret findings and does not replace review of the underlying contract language, so it is best understood as an acceleration tool for a task lawyers still ultimately own rather than a fully autonomous reviewer.
Key Features
- Pre-trained smart fields for hundreds of common contract clause types
- Batch processing of large contract sets for due diligence review
- Structured summary tables exporting extracted clause data
- Ability to train custom smart fields for specialized contract types
- Integration into Litera's broader legal technology suite
- Designed for accuracy verification alongside human legal review