Ironclad for workflow. Luminance for autonomous review. Kira for M&A due diligence. Three CLM platforms that look similar on a feature matrix but solve fundamentally different problems. Ironclad automates the contracting process from request to signature. Luminance reads and negotiates contracts without human intervention. Kira extracts data from thousands of documents during transactions.
The mistake most firms make: buying a CLM based on demo impressions instead of matching the tool to their actual bottleneck. If your problem is contract cycle time, that's Ironclad. If your problem is first-pass review volume, that's Luminance. If your problem is due diligence speed, that's Kira.
Ironclad: The Contract Workflow Engine
Ironclad dominates contract lifecycle automation — intake, approval routing, negotiation tracking, execution, and obligation management. The platform is built for legal teams that process high volumes of contracts and need standardized workflows with guardrails. Self-service contracting lets business teams generate approved contracts without bothering legal for routine agreements. The AI assists with redlining and clause suggestions, but Ironclad's real power is the workflow layer that eliminates email-based contract processes. Companies like Mastercard, L'Oreal, and Dropbox use it because their contract volume demands systematic process, not just smarter document review.
Luminance: Autonomous AI That Negotiates NDAs While You Sleep
Luminance made headlines with Auto Redline — AI that autonomously reviews, redlines, and negotiates contracts against your playbook without human involvement. For NDAs, standard vendor agreements, and routine contracts, Luminance handles the full cycle: read, compare to playbook, redline, send back. Humans only step in for exceptions. This is genuinely autonomous AI, not AI-assisted review. The platform also handles complex contract analysis for M&A and regulatory compliance, but the autonomous NDA processing is the killer feature that justifies the investment for firms drowning in routine agreements. Built in the UK, strong in European and international markets.
Kira (now Litera): M&A Due Diligence Extraction at Scale
Kira (acquired by Litera) built its reputation on extracting specific data points from thousands of contracts during M&A due diligence. Change of control provisions, assignment clauses, termination rights, IP ownership — Kira finds them across entire contract portfolios in hours instead of weeks. The machine learning models are trained on millions of real contract clauses, delivering extraction accuracy that general-purpose AI can't match. For law firms and corporate development teams running transactions, Kira isn't optional — it's the difference between a two-week due diligence review and a two-day one. Less useful for day-to-day contract management.
Feature Comparison: What Each Platform Actually Does Best
Contract creation and workflow: Ironclad wins. Templates, approval routing, self-service portals — purpose-built for volume.
Autonomous contract review: Luminance wins. Auto Redline is the most advanced autonomous negotiation capability on the market.
Due diligence extraction: Kira wins. Purpose-trained ML models for clause extraction across massive document sets.
Day-to-day CLM for legal teams: Ironclad. It's the most complete lifecycle platform.
Reducing routine review burden: Luminance. Autonomous processing eliminates human review for standard agreements.
Transaction support: Kira. Built specifically for the data extraction needs of M&A.
Pricing and Implementation Reality
Ironclad runs $30K-$250K/year depending on users, integrations, and contract volume. Implementation takes 2-4 months for full workflow setup. The investment is in process transformation, not just software.
Luminance prices based on document volume and AI processing — expect enterprise pricing starting around $50K/year. The autonomous features require playbook configuration upfront but deliver ROI fast once running.
Kira/Litera prices on a per-project or annual subscription basis, often bundled with other Litera products. Transaction-based pricing makes sense for firms with regular deal flow; less economic for occasional use.
All three require meaningful implementation effort. None are plug-and-play.
The Bottom Line: Ironclad for contract workflow automation. Luminance for autonomous review and negotiation. Kira for M&A due diligence extraction. Buy the one that solves your actual bottleneck — not the one with the best demo.
AI-Assisted Research. This piece was researched and written with AI assistance, reviewed and edited by Manu Ayala. For deeper takes and the perspective behind the research, follow me on LinkedIn or email me directly.
