DISCO wins for litigation teams that want one platform from ingestion to trial

DISCO wins for litigation teams that want one platform from ingestion to trial — no stitching together vendors, no integration headaches. Relativity wins when you've already built your tech stack around its ecosystem and need the broadest third-party marketplace in ediscovery.

DISCO was built by trial lawyers, and it shows. The platform covers ediscovery, legal research, and case management with Cecilia, their agentic AI assistant, included at no extra cost. Relativity's strength is the opposite: it's a platform that connects everything else through 200+ marketplace integrations. One gives you a finished product. The other gives you a toolkit.

DISCO vs. Relativity: Head-to-Head Comparison

The core difference: DISCO is an all-in-one platform. Relativity is an ecosystem platform. Here's how they compare:

| Feature | DISCO | Relativity | |---|---|---| | Approach | End-to-end (ediscovery + research + case mgmt) | Platform + marketplace ecosystem | | AI Assistant | Cecilia (agentic AI, included free) | aiR for Review (add-on analytics) | | Legal Research | Built-in, integrated with case data | Not included — use third-party | | Pricing | Per-GB, predictable, Cecilia included | Per-GB + per-user + marketplace app fees | | Market Position | Mid-market, litigation-focused | Largest market share, broadest adoption | | Best For | Trial teams wanting everything in one place | Firms with existing infrastructure and custom needs | | Integrations | Limited — designed to replace, not integrate | 200+ marketplace apps | | Deployment | Cloud-only | Cloud (RelativityOne), on-prem, hybrid |

DISCO's bet is that consolidation beats integration. Trial lawyers don't want to manage five vendor relationships — they want to upload documents, run AI analysis, find case law, and prep for trial in one place.

Cecilia vs. aiR: The AI Battle That Matters

DISCO's Cecilia is an agentic AI that works across the entire platform — ediscovery, legal research, and case analysis. You can ask Cecilia to find relevant documents, summarize deposition testimony, identify privilege issues, and cross-reference case law, all in natural language. It's included in your DISCO subscription at no additional cost.

Relativity's aiR for Review is focused specifically on document classification. You write instructions in plain English telling aiR what to look for, and it classifies documents accordingly. It's effective for first-pass review and can dramatically cut review time. But it doesn't touch legal research, case strategy, or cross-platform analysis.

The difference matters: Cecilia is trying to be your AI associate. aiR is trying to be your AI reviewer. If you want AI that helps across the full litigation lifecycle, DISCO's vision is more ambitious. If you want AI that's laser-focused on document review accuracy, Relativity's approach is more mature in that specific lane.

The End-to-End Advantage

DISCO's biggest differentiator isn't any single feature — it's that everything talks to everything. When you find a key document in review, Cecilia can instantly search for related case law. When you're prepping a deposition, the platform pulls relevant exhibits from your review database automatically.

With Relativity, achieving this requires connecting multiple tools: Relativity for review, Westlaw or Lexis for research, a separate case management platform, and potentially separate production tools. Each connection point is a place where context gets lost and workflow breaks.

For a 5-attorney litigation team handling 15 cases, DISCO's integrated approach saves 5-10 hours per week in context-switching alone. For a 200-attorney firm with dedicated litigation support, specialized review teams, and custom Relativity workflows built over years, the integration overhead is already solved — and Relativity's depth wins.

Ecosystem and Flexibility

Relativity's marketplace is unmatched. Need a specialized processing tool for financial data? There's an app. Need automated privilege logging with specific jurisdictional rules? There's an app. Need custom analytics for regulatory investigations? Multiple apps.

DISCO intentionally limits its ecosystem because they believe one platform should handle it all. This means fewer customization options but also fewer compatibility headaches, fewer vendor relationships, and fewer invoices to reconcile.

The honest trade-off: Relativity gives you maximum flexibility at the cost of complexity. DISCO gives you maximum simplicity at the cost of flexibility. If your matters follow predictable patterns — plaintiff litigation, commercial disputes, employment cases — DISCO's built-in tools cover 95% of what you need. If your matters span regulatory investigations, government contracts, cross-border disputes, and patent litigation, Relativity's ecosystem handles the edge cases.

Cost and Switching Considerations

DISCO's pricing is straightforward: per-GB with Cecilia and all features included. A typical mid-size matter runs $1.5K-4K/month. No surprise add-on fees for AI, no separate research subscriptions, no marketplace app charges.

Relativity's total cost is harder to calculate. Base hosting and licensing plus marketplace apps plus processing fees plus potential admin costs. A comparable matter on RelativityOne often runs $3K-8K/month when you factor in everything.

But switching costs are real. If your firm has 5+ years of Relativity workflows, custom templates, trained staff, and marketplace apps woven into daily operations, moving to DISCO means rebuilding all of that. The ROI calculation needs to account for 6-12 months of productivity dip during transition. For firms evaluating their first ediscovery platform or replacing an aging system, DISCO's all-in-one model is the cleaner starting point.

The Bottom Line: Choose DISCO if you want one platform that covers ediscovery, AI, and legal research out of the box; choose Relativity if your firm's infrastructure already runs on its ecosystem and you need maximum customization.