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Manufacturing · head to head

Flow Software vs Sight Machine

Flow Software logo

Flow Software

Manufacturing

Manufacturing KPI and OEE calculation engine with published list prices, licensed by measure count

From
$11390/one-time
Rated
-
Full reviewWebsite
Sight Machine logo

Sight Machine

Manufacturing

Enterprise manufacturing data platform that builds a plant data model rather than a dashboard

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flow Software the 11,390 dollar Starter licence caps at 250 measures and events, which a multi-line plant exhausts quickly once each line contributes a dozen calculations, forcing a jump to the 62,230 dollar tier.; Sight Machine onboarding is a data engineering project measured in months per plant, so value arrives long after the contract starts and the internal sponsor needs the patience and budget to survive that gap.
  • They diverge on capability: Flow Software covers Calculation engine, Sight Machine covers Unified plant data model.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Flow Software and Sight Machine actually diverge.

Attributes where Flow Software and Sight Machine differ
AttributeFlow SoftwareSight Machine
Starting price$11390/one-timeOn request
Pricing modelOne-time purchasequote
PlatformsWindows, WebWeb, API

Identical on both: free tier (No), user rating (Not yet rated), category (Manufacturing).

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 Flow Software

  • Calculation engine
  • Measure model
  • Historian connectors
  • Manual data entry
  • Event framing
  • Excel and Power BI output
  • Flow dashboards
  • AI Gateway

Only in Sight Machine

  • Unified plant data model
  • Broad ingestion
  • Cross plant benchmarking
  • Root cause analysis
  • Natural language querying
  • Cloud data platform delivery

What people use each for

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

Flow Software

  • A brewery replacing a fragile network of OEE spreadsheets with governed calculations from the same historian datanot Sight Machine
  • Reporting specific energy consumption per tonne against an ISO 50001 audit where the calculation method must be documentednot Sight Machine
  • Feeding Power BI plant dashboards from a historian without giving analysts direct tag-level accessnot Sight Machine
  • A site that needs lab results typed in and combined with automated tag data in the same yield calculationnot Sight Machine

Sight Machine

  • A corporate operations team that cannot compare plant performance because every site defines a stoppage differentlynot Flow Software
  • A manufacturer whose historian data is plentiful but has never been modelled into anything a business can querynot Flow Software
  • A group standardising manufacturing reporting into a cloud data warehouse alongside finance and supply chain datanot Flow Software
  • A quality organisation investigating a defect that appears at several plants with different equipmentnot Flow Software

Where each one falls short

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

Flow Software

  • The 11,390 dollar Starter licence caps at 250 measures and events, which a multi-line plant exhausts quickly once each line contributes a dozen calculations, forcing a jump to the 62,230 dollar tier.
  • The Unlimited licence requires every engine on a single server or VM, so any multi-server or multi-site topology goes straight to Distributed at roughly double the price with no intermediate option.
  • Maintenance renews at about fifteen percent of the installed base annually, so a large perpetual estate carries a five-figure recurring cost that the headline perpetual price hides.
  • It is a Windows product with a Microsoft data stack, so Linux or container-native deployment strategies do not apply and the server has to be managed on the plant Windows estate.
  • It calculates and reports but does not collect from equipment itself, so an existing historian or OPC layer is a prerequisite and Flow adds cost on top of that rather than replacing it.

Sight Machine

  • Onboarding is a data engineering project measured in months per plant, so value arrives long after the contract starts and the internal sponsor needs the patience and budget to survive that gap.
  • It assumes the instrumentation already exists, so a plant whose machines produce no usable data gets nothing from a data platform and needs to solve connectivity first with a different class of product.
  • Pricing scales with plants and data volume and is never published, which puts it out of reach for single site manufacturers regardless of how relevant the capability sounds.
  • It is not an MES and does not control or execute anything, so it sits on top of the operational systems and adds a layer to maintain rather than replacing one.
  • Success depends on a central team that owns definitions and enforces them, and in groups where plants retain autonomy the standardisation the platform provides gets quietly ignored at site level.

Pricing, plan by plan

Flow Software

$11390/one-time
  • Starter$11390/one-time
    • 250 KPI measures and events
    • Single server deployment
    • First year of software maintenance included
  • Unlimited$62230/one-time
    • Unlimited KPI measures and events
    • All engines must run on one server or dedicated VM
    • First year of maintenance included
  • Distributed$128450/one-time
    • Unlimited measures with engines distributed across multiple servers
    • Required for multi-server and multi-site deployments
    • Available as an annual subscription at 34,250 USD instead

Sight Machine

On request
  • Sight Machine$undefined/year
    • Enterprise manufacturing data platform
    • Per plant onboarding and modelling services
    • Cross site analytics and benchmarking

Which should you pick?

Choose Flow Software if

  • You need calculation engine.
  • You work on Windows, Web.
  • You also want measure model.
Flow Software review

Choose Sight Machine if

  • You need unified plant data model.
  • You work on Web, API.
  • You also want broad ingestion.
Sight Machine review

Questions people ask

Is Flow Software or Sight Machine better?
Neither clearly leads. Flow Software starts at $11390/one-time and Sight Machine at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flow Software or Sight Machine?
Flow Software starts at $11390/one-time and Sight Machine at On request.
Does Flow Software or Sight Machine run on more platforms?
Flow Software runs on Windows, Web. Sight Machine runs on Web, API.
What is Flow Software best used for?
Flow Software is most often used for a brewery replacing a fragile network of oee spreadsheets with governed calculations from the same historian data, reporting specific energy consumption per tonne against an iso 50001 audit where the calculation method must be documented, feeding power bi plant dashboards from a historian without giving analysts direct tag-level access, a site that needs lab results typed in and combined with automated tag data in the same yield calculation. Of those, a brewery replacing a fragile network of oee spreadsheets with governed calculations from the same historian data and reporting specific energy consumption per tonne against an iso 50001 audit where the calculation method must be documented are not what Sight Machine is typically brought in for.
What can Flow Software do that Sight Machine cannot?
Flow Software covers Calculation engine, Measure model, Historian connectors, Manual data entry. Sight Machine covers Unified plant data model, Broad ingestion, Cross plant benchmarking, Root cause analysis.

Answered from the vendors’ own pages

Flow Software: Does Flow publish real prices?

Yes. Starter is 11,390 USD perpetual for 250 measures, Unlimited is 62,230 USD perpetual or 16,595 USD a year, and Distributed is 128,450 USD perpetual or 34,250 USD a year.

Sight Machine: Is this an OEE product?

It can produce OEE, but buying it for OEE alone is expensive. The reason to buy it is cross plant data standardisation.

Flow Software: Is perpetual licensing still offered?

Yes, at every tier, with the first year of maintenance included and renewal at roughly fifteen percent per year. Subscription is available on Unlimited and Distributed only.

Sight Machine: Does it need a historian?

It reads from historians, control systems and MES. Some source of machine data is a prerequisite.

Flow Software: Do I need a historian as well?

Effectively yes. Flow reads from historians, databases and OPC sources; it is a calculation layer, not a data collector.

Sight Machine: How long does a plant take to onboard?

Plan in months per plant, depending on how many sources and how inconsistent the existing definitions are.

Flow Software: What counts as a measure?

Each configured KPI or event definition. A single line typically consumes ten to thirty, which is what makes the 250 Starter cap tighter than it looks.

Sight Machine: Who is the buyer?

A corporate manufacturing, quality or digital function. It is rarely a plant level purchase.

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