Softwr

Automation Integration · head to head

Letta vs Paragon

Letta logo

Letta

Automation Integration

Machines that learn

From
Free
Rated
-
Full reviewWebsite
Paragon logo

Paragon

Automation Integration

Embedded integration platform for SaaS

From
$299/month
Rated
-
Full reviewWebsite

The short version

  • Only Letta has a free tier, so it costs nothing to try first.
  • Each has a real cost: Letta free tier limited to 3 stateful agents; Paragon no published pricing rates or specific plan costs
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Letta and Paragon actually diverge.

Attributes where Letta and Paragon differ
AttributeLettaParagon
Starting priceFree$299/month
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebWeb, Embedded
FoundedUnknown2021

Identical on both: 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 Paragon does not also cover.

Only in Paragon

  • Embedded workflows
  • Native integrations
  • Workflow builder
  • Error handling
  • Monitoring
  • Analytics
  • Webhooks
  • 500+ 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 Paragon
  • Enabling reflection during idle periods via sleep-computenot Paragon
  • Managing agent context and extracting learningsnot Paragon

Paragon

  • Embedding third party integrations into a SaaS productnot Letta
  • Managing customer facing connectors without building each onenot 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

Paragon

  • No published pricing rates or specific plan costs
  • Pricing is entirely custom based on Connected Users
  • Both Pro and Enterprise plans require direct contact for pricing

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

Paragon

$299/month
  • Starter$299/month
    • 50 integrations
    • Basic support
  • Growth$999/month
    • 200 integrations
    • Priority support
  • Enterprise$5000/month
    • Unlimited integrations
    • Dedicated support

Which should you pick?

Choose Letta if

  • You want to start without paying.
Letta review

Choose Paragon if

  • You need embedded workflows.
  • You work on Web, Embedded.
  • You also want native integrations.
Paragon review

Questions people ask

Is Letta or Paragon better?
Neither clearly leads. Letta starts at Free and Paragon at $299/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Letta or Paragon?
Letta has a free tier; the other does not. Paid plans start at Free for Letta and $299/month for Paragon.
Does Letta or Paragon run on more platforms?
Letta runs on Web. Paragon runs on Web, Embedded.
Can I use Letta for free?
Yes. Letta has a free tier, so you can try it without paying. Paragon starts at $299/month.
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 Paragon is typically brought in for.
What can Letta do that Paragon cannot?
Paragon covers Embedded workflows, Native integrations, Workflow builder, Error handling.

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
Paragon: How much does Paragon cost?

Paragon does not publish pricing rates. The company uses a custom pricing model based on Connected Users (the number of tenant organizations using integrations), requiring customers to request custom quotes.

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
Paragon: What are Paragon's pricing plans?

Paragon offers Pro and Enterprise plans. The Pro plan includes unlimited integrations, access to all three products, and custom integrations. The Enterprise plan adds self-hosted options, priority support with SLAs, and SAML SSO.

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
Paragon: Does Paragon offer a free trial?

Yes, a free trial is available via signup, though specific trial duration and limitations are not detailed on the pricing page.

Source
Paragon: How does Paragon determine the cost of my plan?

Pricing is customized based on business model and the number of Connected Users, meaning organizations must contact Paragon's sales team for a custom quote.

Source
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