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Technology · head to head

Attio vs GNAT Pro

Attio logo

Attio

Technology

The CRM built for the next generation of companies

From
Free
Free plan
Yes
Full reviewWebsite
GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Attio has a free tier, so it costs nothing to try first.
  • Each has a real cost: Attio the free plan stops at 3 seats and 50,000 records; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Attio and GNAT Pro actually diverge.

Attributes where Attio and GNAT Pro differ
AttributeAttioGNAT Pro
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
PlatformsWeb, Ios, Android, ApiWeb
CategoryTechnologyDeveloper Tools
Founded2021Unknown

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 Attio

  • Custom data model
  • Flexible views
  • Email integration
  • Calendar sync
  • Automations
  • Mobile app
  • Real-time collaboration
  • Templates

Only in GNAT Pro

Nothing recorded that Attio does not also cover.

What people use each for

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

Attio

  • Sales pipelinenot GNAT Pro
  • Customer managementnot GNAT Pro
  • Deal trackingnot GNAT Pro
  • Investor relationsnot GNAT Pro
  • Partnership managementnot GNAT Pro

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot Attio
  • Developing automotive embedded systems with ISO-26262 compliancenot Attio
  • Integrating Ada, C/C++, and Rust components in single codebasenot Attio
  • Managing software supply chain vulnerabilities and SBOMsnot Attio
  • Supporting long-lived software systems spanning decadesnot Attio

Where each one falls short

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

Attio

  • The free plan stops at 3 seats and 50,000 records
  • Outbound email is capped at 200 messages a month on the free plan and 1,000 on Plus
  • Call Intelligence, sequences, advanced reporting and permission controls all require the Pro tier
  • Custom objects are capped at 3 on free, 5 on Plus and 12 on Pro, with unlimited objects reserved for Enterprise
  • File storage is capped at 50 GB on the free and Plus tiers

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

Pricing, plan by plan

Attio

Free
  • FreeFree
    • Up to 3 seats
    • 50000 records
    • 3 objects
  • Plus$44/month
    • Up to 10 seats
    • 250000 records
    • 5 objects
  • Pro$99/month
    • Unlimited seats
    • 1000000 records
    • 12 objects
  • EnterpriseFree
    • Custom pricing
    • Unlimited objects
    • Custom record limits

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose Attio if

  • You need custom data model.
  • You want to start without paying.
  • You work on Web, Ios, Android, Api.
  • You also want flexible views.
Attio review

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from Attio on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Questions people ask

Is Attio or GNAT Pro better?
Neither clearly leads. Attio starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Attio or GNAT Pro?
Attio has a free tier; the other does not. Paid plans start at Free for Attio and On request for GNAT Pro.
Does Attio or GNAT Pro run on more platforms?
Attio runs on Web, Ios, Android, Api. GNAT Pro runs on Web.
Can I use Attio for free?
Yes. Attio has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is Attio best used for?
Attio is most often used for sales pipeline, customer management, deal tracking, investor relations. Of those, sales pipeline and customer management are not what GNAT Pro is typically brought in for.
What can Attio do that GNAT Pro cannot?
Attio covers Custom data model, Flexible views, Email integration, Calendar sync.

Answered from the vendors’ own pages

Attio: How much does Attio cost per user?

Attio's Plus plan is $44/user/month (or $35/month annually with 20% discount). Pro is $99/user/month (or $79/month annually). The Free plan includes up to 3 seats at no cost.

Source
GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
Attio: What are Attio's seat and record limits for each plan?

Free plan includes up to 3 seats with 50,000 records. Plus supports up to 10 seats with 250,000 records. Pro offers unlimited seats with 1 million records. Enterprise has custom record limits.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
Attio: Are there additional costs for Attio beyond the per-user subscription?

Yes, workspace credits are available as add-ons ($70-$475/month depending on volume). Annual billing provides a 20% discount on the base per-user cost.

Source
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