Spellbook
Suggests clauses, flags risk and redlines contracts inside Microsoft Word.
Full Spellbook record →Head to head
Spellbook vs Luminance
Spellbook (Spellbook) and Luminance (Luminance) both sit in Legal. Spellbook shipped more tracked changes in the last 30 days (4 vs 1). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Spellbook Spellbook | Luminance Luminance |
|---|---|---|
| Segment | Legal | Legal |
| Version | ACM | 2026 platform |
| Entry cost | 7-day free trial available, contact for custom user-based pricing. | Pricing is not publicly listed. Contact Luminance to request a demo and custom quote. |
| Pricing tiers | 7-Day Free Trial free | Enterprise free |
| Model stack | GPT5 · Opus | Luminance Mixture of Experts · Luminance Proprietary Models · Multiple Models / Mixture of Experts · Panel of legal models · Proprietary Legal AI Models · Proprietary Legal-Grade AI Architecture · Proprietary Mixture of Experts (MoE) |
| Context window | Not published | Not published |
| Public API | ||
| Routes models | ||
| Changes / 30d | 4 | 1 |
| Origin | Global | Global |
| Capabilities | Clause suggestions, Redlining, Risk flagging, Benchmarks, Playbooks, Contract Review, Contract Drafting, Contract Comparison | Automated redlining, Contract negotiation, Repository analysis, Divergence detection, Contract Generation, Contract Negotiation, Contract Analysis, Compliance Monitoring |
Luminance
Reviews and negotiates contracts using purpose-trained legal models.
Full Luminance record →