Sirion provides enterprise AI CLM with contract intelligence, obligation management, and supplier performance tracking. Atticus manages your entire Ontario practice — matters, billing, trust accounting, and Canadian AI for all your client files. $149 CAD per lawyer per month.
Sirion handles enterprise AI contract intelligence and obligation management. Atticus manages your practice — from intake and conflict checking through matter management, trust accounting, and Canadian AI for your files.
Sirion provides enterprise AI CLM with contract intelligence and obligation management for large organizations. Ontario law firms need more: billing, trust accounting, matter management, client intake, and conflict checking. Atticus manages your entire Ontario practice.
Sirion is an India-founded enterprise CLM platform. Atticus is built specifically for Canadian and Ontario legal context — Ontario Limitations Act, LSO By-Law 9 trust accounting rules, Canadian case law references, and LSO AI guidance on using AI in practice.
Sirion has no trust accounting module. Ontario lawyers still need separate software for LSO By-Law 9 trust accounting. Atticus includes mixed trust accounts, monthly reconciliation, and trust ledger reporting.
Sirion AI extracts obligations and monitors supplier performance for enterprise contracts. Atticus AI reads all documents across your practice — corporate records, agreements, correspondence, wills — extracting limitation period triggers, key dates, and parties regardless of practice area.
Sirion is a global enterprise platform. Atticus stores all Ontario client files and trust records on Canadian servers by default — aligned with Law Society of Ontario guidance on cloud storage of client confidential information.
Sirion uses enterprise licensing, and Ontario lawyers still need separate practice management, billing, and trust accounting. Atticus is $149 CAD per lawyer per month for the complete Ontario practice platform.
See how Atticus compares to Sirion for Ontario solo and small law firms — complete Ontario practice management with Canadian AI vs India-founded enterprise AI CLM with contract intelligence and obligation management.
| Feature | Atticus | Sirion |
|---|---|---|
| Practice management | ✓Full integrated practice management for all Ontario practice areas | Enterprise AI CLM with contract intelligence, obligation management, and performance tracking for large organizations; no general practice management |
| Ontario trust accounting | ✓Built-in, LSO By-Law 9 compliant; mixed trust, monthly reconciliation | No trust accounting |
| HST billing | ✓Native HST with CRA-compliant invoices built in | No billing or invoicing |
| Time tracking | ✓Integrated time and billing; AI-assisted time capture | No time tracking |
| AI legal work | ✓Canadian legal AI: document analysis, entity extraction, limitation period flagging, practice assistant, semantic search across your files | AI-powered contract intelligence, clause extraction, obligation tracking, deviation detection, and supplier performance management for enterprises |
| Matter management | ✓Full matter lifecycle from intake to close for all practice areas | Contract-centric workflow; no matter management beyond enterprise contracts |
| Document management | ✓AI document analysis, summarization, and entity extraction; semantic search across all files | Enterprise contract repository with AI contract intelligence, obligation extraction, and performance monitoring |
| Canadian legal context | ✓Built for Ontario law: Limitations Act 2002, LSO By-Law 9 trust accounting, Ontario court procedures | India-founded enterprise CLM platform; not tailored to Canadian or Ontario legal requirements |
| Limitation period alerts | ✓Ontario Limitations Act 2002 built in; AI extracts dates from documents | Contract obligation deadlines and renewal alerts; no Ontario limitation period tracking |
| Conflict checking | ✓Automated AI-assisted conflict search | No conflict checking |
| LSO compliance | ✓Built for Ontario LSO requirements; Canadian data residency; LSO AI guidance considered | Global enterprise platform; Ontario LSO compliance requires separate practice management |
| Pricing (CAD) | ✓$149/lawyer/month (all-in, including AI) | Enterprise licensing; separate practice management cost additional |
| Data residency | ✓Canadian servers by default | Global cloud infrastructure |
| Scope | ✓Full practice — intake, matters, billing, trust accounting, AI for all documents | Enterprise CLM — AI contract intelligence, obligation management, deviation detection, supplier performance, and contract analytics |
Add Atticus for practice management — LSO-compliant trust accounting, HST billing, AI document analysis, limitation period tracking, and conflict checking. $149 CAD per lawyer per month.
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