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Perplexity vs Stampli

Perplexity logo

Perplexity

Software

AI-powered answer engine with citations

From
Free
Rated
-
Full reviewWebsite
Stampli logo

Stampli

Software

AI-powered accounts payable automation

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only Perplexity has a free tier, so it costs nothing to try first.
  • Each has a real cost: Perplexity context window has been stealthily reduced despite prior claims of 1-million-token capacity; Stampli pricing is by quote only: the pricing page publishes no rate, no minimum and no cost driver, offering only a Request a Quote form
  • They diverge on capability: Perplexity covers Real-time web search, Stampli covers AI invoice processing.

Where they differ

Only the attributes on which Perplexity and Stampli actually diverge.

Attributes where Perplexity and Stampli differ
AttributePerplexityStampli
Starting priceFree$29/month
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsWeb, iOS, Android, Comet (AI browser)Web, Ios, Android
Founded20222014

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

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 Perplexity

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

Only in Stampli

  • AI invoice processing
  • Approval workflows
  • Vendor management
  • Payment processing
  • Audit trails
  • NetSuite
  • Sage Intacct
  • QuickBooks

Both cover

  • Web support
  • Ios support
  • Android support

What people use each for

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

Perplexity

  • ai tools managementnot Stampli
  • Workflow automationnot Stampli
  • Reportingnot Stampli

Stampli

  • Automating accounts payable invoice capture and codingnot Perplexity
  • Routing invoice approvals with discussion held against each invoicenot Perplexity
  • Paying suppliers and issuing virtual cards from the AP workflownot Perplexity

Where each one falls short

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

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

Stampli

  • Pricing is by quote only: the pricing page publishes no rate, no minimum and no cost driver, offering only a Request a Quote form
  • Payments and card products are sold alongside the core AP automation rather than being separately priced on the public site

Pricing, plan by plan

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

Stampli

$29/month
  • Essential$undefined/month
    • Invoice processing
    • Basic approvals
    • Email notifications
  • Professional$undefined/month
    • AI-powered coding
    • Advanced workflows
    • ERP integrations
  • Enterprise$undefined/month
    • Custom workflows
    • API access
    • Dedicated support

Which should you pick?

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

Choose Stampli if

  • You need ai invoice processing.
  • You work on Web, Ios, Android.
  • You also want approval workflows.
Stampli review

Questions people ask

Is Perplexity or Stampli better?
Neither clearly leads. Perplexity starts at Free and Stampli at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Perplexity or Stampli?
Perplexity has a free tier; the other does not. Paid plans start at Free for Perplexity and $29/month for Stampli.
Does Perplexity or Stampli run on more platforms?
Perplexity runs on Web, iOS, Android, Comet (AI browser). Stampli runs on Web, Ios, Android.
Can I use Perplexity for free?
Yes. Perplexity has a free tier, so you can try it without paying. Stampli starts at $29/month.
What is Perplexity best used for?
Perplexity is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Stampli is typically brought in for.
What can Perplexity do that Stampli cannot?
Perplexity covers Real-time web search, Source citations, Follow-up questions, File analysis. Stampli covers AI invoice processing, Approval workflows, Vendor management, Payment processing. Both handle Web support, Ios support, Android support.

Answered from the vendors’ own pages

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
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
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
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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