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Automation Integration · head to head

Letta vs Nintex

Letta logo

Letta

Automation Integration

Machines that learn

From
Free
Rated
-
Full reviewWebsite
Nintex logo

Nintex

Automation Integration

The work automation platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Letta free tier limited to 3 stateful agents; Nintex no published pricing on website; requires direct sales contact
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Letta and Nintex actually diverge.

Attributes where Letta and Nintex differ
AttributeLettaNintex
Pricing modelfreemiumsubscription
PlatformsWebWeb, Mobile
FoundedUnknown2006

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Automation Integration).

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 Letta

Nothing recorded that Nintex does not also cover.

Only in Nintex

  • Workflow builder
  • Process mining
  • Task automation
  • Case management
  • Mobile access
  • Analytics
  • Monitoring
  • 300+ apps

What people use each for

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

Letta

  • Building agents with memory for continuous learningnot Nintex
  • Enabling reflection during idle periods via sleep-computenot Nintex
  • Managing agent context and extracting learningsnot Nintex

Nintex

  • Business process automation and workflow managementnot Letta
  • Document generation and digital signature collectionnot Letta
  • Salesforce and enterprise integrationnot Letta

Where each one falls short

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

Letta

  • Free tier limited to 3 stateful agents
  • Pro tier capped at 20 stateful agents
  • API Plan usage charges apply beyond base tier

Nintex

  • No published pricing on website; requires direct sales contact
  • Free trials available but no trial duration specified
  • Multiple product lines (Cloud, K2, Salesforce) complicate pricing assessment

Pricing, plan by plan

Letta

Free
  • FreeFree
    • Limited agents
    • Limited Letta Auto usage
    • Bring your own API keys
  • Pro$20/month
    • Weekly and monthly Letta Auto quota
    • Pay-as-you-go overage
    • Up to 20 stateful agents
  • API Plan$20/month
    • Unlimited agents
    • $0.10/active agent/month
    • $0.00015/second for tool execution
  • Teams Pro$20/month
    • Per seat pricing
    • Add teammates
    • Letta Auto quota

Nintex

Free
  • StarterFree
    • Limited workflows
    • Community support
  • Professional$500/month
    • Advanced workflows
    • Email support
  • Enterprise$2000/month
    • Unlimited workflows
    • Dedicated support

Which should you pick?

Choose Letta if

  • You want to start without paying.
Letta review

Choose Nintex if

  • You need workflow builder.
  • You want to start without paying.
  • You work on Web, Mobile.
  • You also want process mining.
Nintex review

Questions people ask

Is Letta or Nintex better?
Neither clearly leads. Letta starts at Free and Nintex at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Letta or Nintex?
Letta starts at Free and Nintex at Free.
Does Letta or Nintex run on more platforms?
Letta runs on Web. Nintex runs on Web, Mobile.
Can I use Letta for free?
Both have a free tier, so you can try either at no cost before committing.
What is Letta best used for?
Letta is most often used for building agents with memory for continuous learning, enabling reflection during idle periods via sleep-compute, managing agent context and extracting learnings. Of those, building agents with memory for continuous learning and enabling reflection during idle periods via sleep-compute are not what Nintex is typically brought in for.
What can Letta do that Nintex cannot?
Nintex covers Workflow builder, Process mining, Task automation, Case management.

Answered from the vendors’ own pages

Letta: How much does Letta cost?

Letta offers a free tier, then Pro plan at $20/month with up to 20 stateful agents, API Plan at $20/month base plus usage charges ($0.10/active agent/month, $0.00015/second for tool execution), and Teams Pro at $20/seat/month.

Source
Nintex: Is Nintex free?

Nintex offers 30-day free trials for Workflow and Apps, plus free trials for Process Manager, eSign, and DocGen. No permanent free tier is advertised on their website.

Source
Letta: How many agents can I create on the free plan?

The free tier is limited to 3 stateful agents. Pro plan allows up to 20 stateful agents, while API Plan offers unlimited agents.

Source
Nintex: What is Nintex pricing?

Nintex does not publish pricing on their public website. Pricing varies by product (Cloud Automation, K2, Salesforce) and deployment model. Contact their sales team via nintex.com or request a demo to obtain pricing quotes.

Source
Letta: Does Letta charge for tool execution?

On the API Plan, Letta charges $0.00015 per second for tool execution. The Pro and Teams Pro plans include execution in their monthly fee.

Source
Nintex: How long are Nintex free trials?

Nintex offers 30-day free trials for Workflow and Apps products. Process Manager, eSign, and DocGen trials are available, though exact durations are not specified on the trial page.

Source
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