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Energy · head to head

Cognite Data Fusion vs Perplexity

Cognite Data Fusion logo

Cognite Data Fusion

Energy

Industrial data platform that contextualises OT, IT and engineering data into an asset-centric knowledge graph

From
On request
Rated
-
Full reviewWebsite
Perplexity logo

Perplexity

AI

AI-powered answer engine with citations

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Perplexity has a free tier, so it costs nothing to try first.
  • Each has a real cost: Cognite Data Fusion the platform is only as good as the contextualisation work, and that mapping effort is a consulting project that regularly costs more than the first-year subscription.; Perplexity context window has been stealthily reduced despite prior claims of 1-million-token capacity
  • They diverge on capability: Cognite Data Fusion covers Asset-centric data model, Perplexity covers Real-time web search.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Cognite Data Fusion and Perplexity actually diverge.

Attributes where Cognite Data Fusion and Perplexity differ
AttributeCognite Data FusionPerplexity
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWeb, CloudWeb, iOS, Android, Comet (AI browser)
CategoryEnergyAI
FoundedUnknown2022

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

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 Cognite Data Fusion

  • Asset-centric data model
  • Entity matching
  • P&ID parsing
  • 3D contextualisation
  • Cognite Atlas AI
  • Data workflows
  • Open SDKs
  • Extractors

Only in Perplexity

  • Real-time web search
  • Source citations
  • Follow-up questions
  • File analysis
  • Browser extension
  • API access
  • Mobile apps
  • Web support

What people use each for

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

Cognite Data Fusion

  • An operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one searchnot Perplexity
  • A company standardising asset data across sites so an analytics team can build once and deploy to many plantsnot Perplexity
  • An upstream operator building a production-optimisation model that needs sensor data joined to equipment metadatanot Perplexity
  • A team replacing a stalled internal data-lake project where nobody could reconstruct what the tag names meantnot Perplexity

Perplexity

  • ai tools managementnot Cognite Data Fusion
  • Workflow automationnot Cognite Data Fusion
  • Reportingnot Cognite Data Fusion

Where each one falls short

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

Cognite Data Fusion

  • The platform is only as good as the contextualisation work, and that mapping effort is a consulting project that regularly costs more than the first-year subscription.
  • Pricing is consumption-based and unpublished, so costs move with data volume and usage patterns you cannot forecast well until a year in.
  • It does not replace your historian, your ERP or your maintenance system, so Cognite is an additional recurring cost layered on systems you still pay for.
  • The reference base and data model lean heavily towards Norwegian and wider oil, gas and process industries; discrete manufacturing fit is weaker and the local partner network thinner outside energy.
  • Getting value out requires in-house Python and data engineering skill; organisations without a data team end up dependent on Cognite professional services for every new use case.

Perplexity

  • Context window has been stealthily reduced despite prior claims of 1-million-token capacity
  • Citations sometimes point to irrelevant or overly general articles that do not support the stated claims
  • Weak performance on complex multi-step reasoning and deep logic compared to dedicated reasoning LLMs
  • Web crawler ignores robots.txt directives and scrapes content from sites that explicitly opted out
  • Pro subscription quotas and feature access quietly reduced without user notification

Pricing, plan by plan

Cognite Data Fusion

On request
  • Cognite Data Fusion$undefined/year
    • Consumption-based pricing on data volume, compute and users
    • Available through cloud marketplaces with private offers
    • Contextualisation and onboarding quoted as a separate engagement

Perplexity

Free
  • FreeFree
    • Unlimited basic searches
    • 3 Pro Searches per day
    • 1 Research query per month
  • Pro$20/month
    • Unlimited Pro Searches
    • Advanced AI models
    • All free features
  • Pro Annual$200/year
    • Unlimited Pro Searches
    • Advanced AI models
    • All free features
  • Max$200/month
    • Unlimited Pro Searches
    • Labs multi-agent orchestration
    • Perplexity Computer with 19 AI sub-agents

Which should you pick?

Choose Cognite Data Fusion if

  • You need asset-centric data model.
  • You work on Web, Cloud.
  • You also want entity matching.
Cognite Data Fusion review

Choose Perplexity if

  • You need real-time web search.
  • You want to start without paying.
  • You work on Web, iOS, Android, Comet (AI browser).
  • You also want source citations.
Perplexity review

Questions people ask

Is Cognite Data Fusion or Perplexity better?
Neither clearly leads. Cognite Data Fusion starts at On request and Perplexity at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cognite Data Fusion or Perplexity?
Perplexity has a free tier; the other does not. Paid plans start at On request for Cognite Data Fusion and Free for Perplexity.
Does Cognite Data Fusion or Perplexity run on more platforms?
Cognite Data Fusion runs on Web, Cloud. Perplexity runs on Web, iOS, Android, Comet (AI browser).
Can I use Perplexity for free?
Yes. Perplexity has a free tier, so you can try it without paying. Cognite Data Fusion starts at On request.
What is Cognite Data Fusion best used for?
Cognite Data Fusion is most often used for an operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one search, a company standardising asset data across sites so an analytics team can build once and deploy to many plants, an upstream operator building a production-optimisation model that needs sensor data joined to equipment metadata, a team replacing a stalled internal data-lake project where nobody could reconstruct what the tag names meant. Of those, an operator that wants engineers to find the drawing, the sensor trend and the last work order for a valve from one search and a company standardising asset data across sites so an analytics team can build once and deploy to many plants are not what Perplexity is typically brought in for.
What can Cognite Data Fusion do that Perplexity cannot?
Cognite Data Fusion covers Asset-centric data model, Entity matching, P&ID parsing, 3D contextualisation. Perplexity covers Real-time web search, Source citations, Follow-up questions, File analysis.

Answered from the vendors’ own pages

Cognite Data Fusion: Is Cognite a historian?

No. It reads from historians such as PI System and adds context. You still need the historian underneath.

Perplexity: Is Perplexity completely free?

Perplexity has a free tier with unlimited basic searches and 3 Pro Searches per day. Pro ($20/month or $200/year) and Max ($200/month) tiers unlock more advanced features like multi-model access and unrestricted queries.

Source
Cognite Data Fusion: How is it priced?

Consumption-based on data, compute and users, quoted per customer. Nothing is published.

Perplexity: What is the difference between Pro and Max?

Pro provides access to advanced AI models like GPT-5.2, Claude Sonnet 4.5, and Gemini 3 Pro. Max adds Labs for multi-agent orchestration, Perplexity Computer with 19 specialized AI sub-agents, and 10,000 Computer credits per month.

Source
Cognite Data Fusion: How long does a deployment take?

First useful graph in a few months is realistic; full plant contextualisation across a site is typically a year or more.

Perplexity: Can I use Perplexity offline?

No. Perplexity requires an active internet connection for all searches. The full answer service is not available offline.

Source
Cognite Data Fusion: Can we do the contextualisation ourselves?

Technically yes, the SDKs and matching tools are open, but most customers use Cognite or a partner for the first site.

Perplexity: What platforms does Perplexity support?

Perplexity is available as a web application, iOS app, Android app, and as Comet, a dedicated AI browser for mobile (Android available, iOS in development).

Source
Perplexity: How reliable are Perplexity's citations?

Citations are a key feature of Perplexity, but users report that citations sometimes point to irrelevant or overly general articles that don't directly support the claims made.

Source
Perplexity: Does Perplexity's context window match the advertised 1 million tokens?

Perplexity had promoted a 1-million-token context window, but users have reported stealth reductions in the actual context capacity without public announcement.

Source
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