Spellbook vs Ironclad
Side-by-side comparison of AI visibility scores, market position, and capabilities
#1 legal AI for contract review and drafting. 4,000+ law firms. $50M Series B (Oct 2025), on track for $100M ARR in 2026. Founded 2018, Toronto. Private.
About
Spellbook is the leading AI platform for transactional lawyers, founded in 2018 by Scott Stevenson, Daniel Maria, and Matt Mayers, headquartered in Toronto, Canada. The platform integrates directly into Microsoft Word and uses frontier LLMs including GPT-5 and Claude to help lawyers review, draft, and negotiate contracts. Key products include Spellbook Associate, the first AI agent for multi-document transactional drafting.
Contract lifecycle management platform reaching $150M ARR at $3.2B valuation in Jan 2025; founded by Jason Boehmig and Cai GoGwilt (YC S15); Gartner and Forrester Leader;
About
Ironclad was founded in 2017 by Jason Boehmig and Cai GoGwilt, who met at Y Combinator's S15 batch, to digitize the contract process for in-house legal teams still managing contracts through email, Word documents, and shared network drives. The founders observed that legal teams spent the majority of their time on high-volume, repeatable contract workflows — NDAs, vendor agreements, customer agreements — rather than on high-value legal judgment. Ironclad built a no-code contract lifecycle management platform allowing legal teams to create automated workflows without engineering dependencies.\n\nIronclad's platform covers the full contract lifecycle: workflow automation for creation and review, a counterparty negotiation portal for redlining and approvals, a contract repository with AI-powered search and metadata extraction, cycle-time analytics, and integrations with Salesforce, DocuSign, and Slack. Ironclad AI performs obligation extraction, risk flagging, and contract summarization to accelerate review and maintain consistent standard terms. The platform is recognized as a Gartner and Forrester Leader in CLM and serves enterprise legal teams at Dropbox, Mastercard, and L'Oreal.\n\nIronclad reached $150 million in ARR in January 2025 at a $3.2 billion valuation from investors including Y Combinator, Accel, Sequoia, and Thrive Capital. As legal departments face pressure to scale without proportional headcount and as AI-powered contract review matures from point solution to platform capability, Ironclad's position as the workflow layer for enterprise contract operations gives it a structural advantage over point-solution CLM vendors.
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