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Legal · head to head

DISCO vs Relativity

DISCO logo

DISCO

Legal

Cloud e-discovery priced by data volume, with review, legal hold and case preparation in one platform

From
On request
Rated
-
Full reviewWebsite
Relativity logo

Relativity

Legal

Ediscovery and legal data platform for large matters

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: DISCO per-gigabyte pricing that is attractive on a 200 gigabyte matter becomes the dominant line item on multi-terabyte collections, and the only cost lever left is aggressive culling before upload.; Relativity quote-only and expensive, typically billed on data volume, so costs escalate with matter size
  • They diverge on capability: DISCO covers All-in per-gigabyte pricing, Relativity covers Large-scale processing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which DISCO and Relativity actually diverge.

Attributes where DISCO and Relativity differ
AttributeDISCORelativity
PlatformsWebWeb, Cloud, Self-hosted

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Legal).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in DISCO

  • All-in per-gigabyte pricing
  • Cecilia AI
  • Technology assisted review
  • Legal hold
  • Case Builder
  • Self-service ingestion

Only in Relativity

  • Large-scale processing
  • Review workflow
  • Analytics and active learning
  • Application ecosystem

What people use each for

The jobs each tool is most often brought in to do.

DISCO

  • A litigation team that needs a matter budget approved before the volume of collected data is fully knownnot Relativity
  • A firm that wants unlimited reviewer accounts without paying per seat during a document review surgenot Relativity
  • An in-house legal department consolidating legal hold and review with one vendor instead of twonot Relativity
  • A case where speed of ingestion matters more than the analytics depth of an enterprise review platformnot Relativity

Relativity

  • Large litigation with very high document volumesnot DISCO
  • Corporate investigations requiring defensible, auditable reviewnot DISCO
  • Firms whose review process is already built around the platformnot DISCO

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

DISCO

  • Per-gigabyte pricing that is attractive on a 200 gigabyte matter becomes the dominant line item on multi-terabyte collections, and the only cost lever left is aggressive culling before upload.
  • Hosting is cloud only in United States regions, so matters with European, United Kingdom or Australian data residency requirements are excluded outright.
  • Review analytics, scripting and the third-party application ecosystem remain deeper on Relativity, which matters for firms with established review workflows.
  • As a listed company reporting losses, it has been through leadership change including the founder departure in 2023, so multi-year roadmap commitments carry more risk than with a private vendor.
  • Complex productions and unusual data types still require professional services, so the promise of self-service holds mainly for mainstream email and document collections.

Relativity

  • Quote-only and expensive, typically billed on data volume, so costs escalate with matter size
  • Complex enough that certified specialists are a job title, which is a real staffing cost
  • Considerable overkill for small matters, where lighter self-service tools are far cheaper

Pricing, plan by plan

DISCO

On request
  • DISCO Ediscovery$undefined/year
    • Quoted per gigabyte of hosted data per month with unlimited users
    • Annual commitments and volume tiers negotiated for firms with steady caseloads
    • Legal hold, Case Builder and AI features priced as separate modules

Relativity

On request

No published plan breakdown. See the Relativity review.

Which should you pick?

Choose DISCO if

  • You need all-in per-gigabyte pricing.
  • You also want cecilia ai.
DISCO review

Choose Relativity if

  • You need large-scale processing.
  • You work on Web, Cloud, Self-hosted.
  • You also want review workflow.
Relativity review

Questions people ask

Is DISCO or Relativity better?
Neither clearly leads. DISCO starts at On request and Relativity at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DISCO or Relativity?
DISCO starts at On request and Relativity at On request.
Does DISCO or Relativity run on more platforms?
DISCO runs on Web. Relativity runs on Web, Cloud, Self-hosted.
What is DISCO best used for?
DISCO is most often used for a litigation team that needs a matter budget approved before the volume of collected data is fully known, a firm that wants unlimited reviewer accounts without paying per seat during a document review surge, an in-house legal department consolidating legal hold and review with one vendor instead of two, a case where speed of ingestion matters more than the analytics depth of an enterprise review platform. Of those, a litigation team that needs a matter budget approved before the volume of collected data is fully known and a firm that wants unlimited reviewer accounts without paying per seat during a document review surge are not what Relativity is typically brought in for.
What can DISCO do that Relativity cannot?
DISCO covers All-in per-gigabyte pricing, Cecilia AI, Technology assisted review, Legal hold. Relativity covers Large-scale processing, Review workflow, Analytics and active learning, Application ecosystem.

Answered from the vendors’ own pages

DISCO: How is DISCO priced?

Per gigabyte of hosted data per month, all-in, with unlimited users. There is no published rate card, so it is quoted.

Relativity: What does Relativity cost?

It does not publish rates. Ediscovery is generally billed on data volume and users, quoted per matter or organisation.

DISCO: Can data be hosted outside the United States?

Coverage is centred on United States cloud regions, so confirm residency before shortlisting for European or Australian matters.

Relativity: Is Relativity only for law firms?

No. Corporate legal departments and government agencies use it for investigations as well as litigation.

DISCO: Is it cheaper than Relativity?

On small and mid-sized matters usually yes, because seats and analytics are included. On very large collections the volume charge often overtakes a negotiated Relativity arrangement.

Relativity: Do I need trained staff?

In practice yes. Relativity certification is a recognised specialism, and that staffing cost is part of the total.

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