Softwr

Accounting · head to head

Medius vs Stigg

Medius logo

Medius

Accounting

Accounts payable automation and supplier payments for mid-market finance teams, Marlin Equity owned

From
On request
Rated
-
Full reviewWebsite
Stigg logo

Stigg

Accounting

Usage runtime platform for credits and entitlements

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stigg has a free tier, so it costs nothing to try first.
  • Each has a real cost: Medius the sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.; Stigg free tier limited to 10,000 entities and 5M events per month
  • They diverge on capability: Medius covers Invoice capture and coding, Stigg covers Real-time credit enforcement.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Medius and Stigg actually diverge.

Attributes where Medius and Stigg differ
AttributeMediusStigg
Starting priceOn requestFree
Pricing modelquoteFreemium with usage-based and custom tiers
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb, Cloud, BYOC, BYODB, API

Identical on both: user rating (Not yet rated), category (Accounting).

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 Medius

  • Invoice capture and coding
  • Matching and exception handling
  • Fraud and anomaly detection
  • Supplier payments
  • Approval workflow
  • ERP integration

Only in Stigg

  • Real-time credit enforcement
  • Financial-grade credits
  • High-scale metering
  • Budget governance
  • Flexible deployment
  • Billing platform integration
  • Data warehouse integration
  • CRM integration

What people use each for

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

Medius

  • A mid-market finance team where most spend arrives as an invoice with no purchase order to match againstnot Stigg
  • A group with several legal entities on different ERPs that wants one AP process across all of themnot Stigg
  • Reducing invoice fraud exposure with automated detection of supplier bank detail changesnot Stigg
  • Replacing a scanning bureau and a shared AP inbox with automated capture and exception-based reviewnot Stigg

Stigg

  • Managing token and credit usage for AI productsnot Medius
  • Enforcing spending caps and budget controlsnot Medius
  • Implementing prepaid credit systems with expirynot Medius
  • Real-time entitlement verification for feature accessnot Medius
  • Scaling billing infrastructure for high-volume eventsnot Medius

Where each one falls short

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

Medius

  • The sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.
  • Pricing is quote-only and driven by invoice volume, so a business with many low-value invoices pays disproportionately relative to the spend being controlled.
  • Payments are billed on transaction volume separately from the AP subscription, which is easy to omit from a cost comparison against a licence-only AP tool.
  • Private equity ownership since 2017 has produced an acquisition-driven product line, so payments and adjacent capability come from bought-in technology rather than the original platform.
  • ERP integration depth varies sharply by system, and organisations on less common or heavily customised ERPs face integration work that lengthens the implementation.

Stigg

  • Free tier limited to 10,000 entities and 5M events per month
  • Pro plan pricing ($399/month) may be high for early-stage companies
  • Scale and BYOC plans require custom contracts and sales engagement
  • Primarily targets AI and high-scale use cases, not all business models
  • Requires integration with separate billing platform (Stripe, Zuora, etc.)

Pricing, plan by plan

Medius

On request
  • Medius AP Automation$undefined/year
    • Two packaged AP automation tiers
    • Priced by invoice volume and entity count
    • Sourcing, contracts and procurement modules sold separately

Stigg

Free
  • Build (Free Forever)Free
    • 10,000 managed entities per month
    • 5M usage events per month
    • 1K events per second rate limit
  • Pro$399/month
    • 10,000 entities included (graduated pricing to 100K)
    • 25M usage events included (to 500M with graduated rates)
    • 10K events per second (upgradeable to 100K)
  • Scale$null/custom
    • Custom entity and event volumes
    • 50K events per second (upgradeable to 100K)
    • RBAC and SSO (SAML)
  • BYOC$40000/year
    • Deploy in customer VPC
    • Unlimited entities and events
    • No event billing

Which should you pick?

Choose Medius if

  • You need invoice capture and coding.
  • You work on Web, iOS, Android.
  • You also want matching and exception handling.
Medius review

Choose Stigg if

  • You need real-time credit enforcement.
  • You want to start without paying.
  • You work on Web, Cloud, BYOC, BYODB, API.
  • You also want financial-grade credits.
Stigg review

Questions people ask

Is Medius or Stigg better?
Neither clearly leads. Medius starts at On request and Stigg at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Medius or Stigg?
Stigg has a free tier; the other does not. Paid plans start at On request for Medius and Free for Stigg.
Does Medius or Stigg run on more platforms?
Medius runs on Web, iOS, Android. Stigg runs on Web, Cloud, BYOC, BYODB, API.
Can I use Stigg for free?
Yes. Stigg has a free tier, so you can try it without paying. Medius starts at On request.
What is Medius best used for?
Medius is most often used for a mid-market finance team where most spend arrives as an invoice with no purchase order to match against, a group with several legal entities on different erps that wants one ap process across all of them, reducing invoice fraud exposure with automated detection of supplier bank detail changes, replacing a scanning bureau and a shared ap inbox with automated capture and exception-based review. Of those, a mid-market finance team where most spend arrives as an invoice with no purchase order to match against and a group with several legal entities on different erps that wants one ap process across all of them are not what Stigg is typically brought in for.
What can Medius do that Stigg cannot?
Medius covers Invoice capture and coding, Matching and exception handling, Fraud and anomaly detection, Supplier payments. Stigg covers Real-time credit enforcement, Financial-grade credits, High-scale metering, Budget governance.

Answered from the vendors’ own pages

Medius: Is Medius a procurement suite or an AP tool?

Primarily an AP automation platform with procurement modules attached. If sourcing is your main requirement, look elsewhere.

Stigg: How quickly does Stigg check entitlements?

Stigg makes entitlement checks in under 10 milliseconds, enabling real-time enforcement of spending decisions before token consumption.

Source
Medius: Who owns Medius?

Marlin Equity Partners, which acquired it in 2017 and has funded several bolt-on acquisitions since.

Stigg: Can I use Stigg with my existing billing platform?

Yes, Stigg integrates with major billing platforms including Stripe, Zuora, Chargebee, Metronome, and Orb to manage entitlements and credits.

Source
Medius: How is it priced?

By quote, driven by invoice volume and entity count, with payments billed separately on transaction volume.

Stigg: What deployment options does Stigg offer?

Stigg offers cloud API, BYOC (Bring Your Own Cloud) for VPC deployment, and BYODB options for customers who want to manage their own database.

Source
Medius: Does it replace our ERP?

No. It sits alongside the ERP and posts approved invoices into it.

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