Softwr

Accounting · head to head

Lago vs Tropic

Lago logo

Lago

Accounting

Open-source billing infrastructure for usage-based models

From
Free
Rated
-
Full reviewWebsite
Tropic logo

Tropic

Accounting

Software procurement combining a workflow platform with human negotiators and price benchmarks

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Lago has a free tier, so it costs nothing to try first.
  • Each has a real cost: Lago free tier limited to 10,000 entities per month with 5M event cap; Tropic benchmark coverage is concentrated in commonly purchased SaaS, so a company whose spend is dominated by niche, vertical or regionally sold vendors buys intelligence that does not cover its actual contracts.
  • They diverge on capability: Lago covers Real-time usage metering, Tropic covers Contract and renewal repository.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Lago and Tropic actually diverge.

Attributes where Lago and Tropic differ
AttributeLagoTropic
Starting priceFreeOn request
Pricing modelFreemium with optional paid tiersquote
Free tierYesNo
PlatformsWeb, Cloud, Self-hosted, On-premise, VPCWeb

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 Lago

  • Real-time usage metering
  • Multiple pricing models
  • Automated invoicing
  • Prepaid credits
  • Entitlements
  • Multi-currency support
  • Payment orchestration
  • Revenue analytics

Only in Tropic

  • Contract and renewal repository
  • Price benchmarks
  • Negotiation support
  • Intake and approvals
  • Supplier alerts
  • AI consumption management
  • Redundancy analysis
  • Spend reporting

What people use each for

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

Lago

  • Building usage-based billing for high-volume APIs and infrastructurenot Tropic
  • Implementing metered billing for AI and tokenized servicesnot Tropic
  • Creating subscription and hybrid pricing modelsnot Tropic
  • Managing multi-currency billing for global companiesnot Tropic
  • Maintaining billing infrastructure without vendor lock-innot Tropic

Tropic

  • A finance team facing a large renewal with a vendor that knows the market price better than they donot Lago
  • A company whose AI spend is growing faster than anyone can explain and needs consumption measured against commitmentnot Lago
  • An organisation that keeps paying for two products doing the same job in different departmentsnot Lago
  • A lean procurement function that needs negotiation capacity without hiring specialist negotiatorsnot Lago

Where each one falls short

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

Lago

  • Free tier limited to 10,000 entities per month with 5M event cap
  • No specific pricing published for Pro annual plan or Scale plan
  • Self-hosted and on-premise deployments require engineering resources
  • Community support only on free tier
  • Scale plan requires annual contracts and sales engagement

Tropic

  • Benchmark coverage is concentrated in commonly purchased SaaS, so a company whose spend is dominated by niche, vertical or regionally sold vendors buys intelligence that does not cover its actual contracts.
  • Handing negotiation to a third party can damage a direct supplier relationship that a customer relies on for support and roadmap influence, which is a real cost not captured in a savings figure.
  • Claimed savings are measured against a counterfactual price nobody can verify independently, so the return on the subscription is difficult to audit after the fact.
  • Pricing is quoted and typically scales with spend under management, meaning the fee rises with the very software bill the product is meant to reduce.
  • It is focused on software and AI spend rather than general procurement, so it does not help with services, facilities or physical goods, which for many companies is the larger share of third-party spend.

Pricing, plan by plan

Lago

Free
  • Build (Free)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)

Tropic

On request
  • Tropic$undefined/year
    • Contract repository, intake and renewal management
    • Access to price benchmark intelligence
    • Negotiation support from Tropic staff

Which should you pick?

Choose Lago if

  • You need real-time usage metering.
  • You want to start without paying.
  • You work on Web, Cloud, Self-hosted, On-premise, VPC.
  • You also want multiple pricing models.
Lago review

Choose Tropic if

  • You need contract and renewal repository.
  • You also want price benchmarks.
Tropic review

Questions people ask

Is Lago or Tropic better?
Neither clearly leads. Lago starts at Free and Tropic at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lago or Tropic?
Lago has a free tier; the other does not. Paid plans start at Free for Lago and On request for Tropic.
Does Lago or Tropic run on more platforms?
Lago runs on Web, Cloud, Self-hosted, On-premise, VPC. Tropic runs on Web.
Can I use Lago for free?
Yes. Lago has a free tier, so you can try it without paying. Tropic starts at On request.
What is Lago best used for?
Lago is most often used for building usage-based billing for high-volume apis and infrastructure, implementing metered billing for ai and tokenized services, creating subscription and hybrid pricing models, managing multi-currency billing for global companies. Of those, building usage-based billing for high-volume apis and infrastructure and implementing metered billing for ai and tokenized services are not what Tropic is typically brought in for.
What can Lago do that Tropic cannot?
Lago covers Real-time usage metering, Multiple pricing models, Automated invoicing, Prepaid credits. Tropic covers Contract and renewal repository, Price benchmarks, Negotiation support, Intake and approvals.

Answered from the vendors’ own pages

Lago: Can I use Lago open-source for free?

Yes, Lago is open-source under the AGPLv3 license and can be self-hosted. The cloud-based Build plan is also free with limits of 10,000 entities and 5M events per month.

Source
Tropic: What am I actually buying?

Price intelligence and negotiation capacity, wrapped in a contract and renewal management tool. The benchmark data is the asset; the workflow is table stakes.

Lago: What payment providers does Lago integrate with?

Lago integrates with Stripe and Adyen for payment processing. It is not a payment processor itself but orchestrates payments through these providers.

Source
Tropic: Does it work for niche software?

Less well. Benchmarks are strongest on widely purchased SaaS. Ask for coverage on your top ten suppliers by spend before signing.

Lago: Does Lago support multiple currencies?

Yes, Lago supports multi-currency billing with automatic currency conversion for global businesses.

Source
Tropic: Can I verify the savings?

Not independently. Savings are measured against an estimated market price, so treat the figures as directional and negotiate the fee accordingly.

Tropic: Does it cover non-software spend?

No. It is software and AI spend. Services, facilities and goods need a general procurement tool.

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