Supio Review, Pricing & Alternatives (2026)

Supio is a Seattle legal AI company focused on personal injury and mass tort plaintiff firms. It emerged from stealth in August 2024 with a $25 million Series A, then announced a $60 million Series B on April 30, 2025, bringing reported total funding to $91 million. Sapphire Ventures led the Series B, with Mayfield and Thomson Reuters Ventures participating. Supio is built for firms processing substantial case records and portfolios, rather than for general legal question answering. Its named workflows include chronologies, demand letters, case ledgers, litigation drafting, intake, and agentic case operations. The company describes specialized, purpose-built AI models and human expert verification, but does not name the foundation model vendors behind the service.

Supio organizes case preparation around document intelligence and structured outputs. Case Economics, Case Signals, and the Drafting Suite address different stages of reviewing records and producing work product. Teams can create chronologies, demand letters, case ledgers, and litigation drafts. Supio Intake conducts intake around the clock, scores leads, and writes structured case data to a case-management system. Supio Agent, launched in May 2026, plans and executes finished work with attorney oversight at case, portfolio, and firm levels. Connectors support integrations and two-way CMS synchronization, while a Westlaw Advantage connection was announced in April 2026. The practical design is a shared operating layer for case preparation, lead handling, and drafting, rather than a single document-generation utility.

Supio says its system uses specialized, purpose-built AI models with human expert verification. It does not identify the underlying foundation model vendors, so buyers cannot compare model families or published context limits. Named releases in the company’s materials include Supio Agent and Supio Intake in May 2026, the Westlaw Advantage connection in April 2026, and a first-half 2026 report describing 17 times ARR growth since stealth. Supio also claims SOC 2 Type II, HIPAA, PHIPA, and GDPR compliance, with data centers in the United States, United Kingdom, and Canada. The company says customer information remains under client control and is not used to train foundation models. Public descriptions identify a hosted cloud service, not a self-hosted product.

Supio publishes two commercial access options, but neither has a dollar price. Case Subscription targets larger firms seeking a predictable, lower per-case cost. Unlimited Firm Access offers unlimited cases, users, and pages at the lowest per-case cost. Both options are described as having unlimited usage, no platform fees, and no lock-in contracts. The company says a pilot may begin with a handful of cases, yet it does not publish trial terms, minimum volumes, overage rules, or detailed entitlements. API pricing, quotas, authentication details, and usage limits are also unpublished. The headline unlimited terms are clear, but a buyer still needs a firm-specific quote to calculate annual cost and assess operational boundaries.

The main buying risk is opacity around commercial and technical details. Supio does not publish dollar prices, named model vendors, API limits, retention schedules, or self-hosted deployment options. EvenUp is the closest specialist comparison, covering plaintiff-injury intake, treatment, demands, negotiation, discovery, and trial, with MedChrons combining AI and professional or nurse review. Filevine’s LOIS is broader case-management software that acts on matters, deadlines, documents, and appointments inside its system of record. Litify combines Salesforce-based practice management with agentic workflows and a Supio-powered damages assistant. Supio should be picked by plaintiff firms wanting dedicated case intelligence, intake, drafting, and portfolio automation, provided a custom quote and contract answer their integration and governance requirements.