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Automation Integration · head to head

Letta vs Parabola

Letta logo

Letta

Automation Integration

Machines that learn

From
Free
Rated
-
Full reviewWebsite
Parabola logo

Parabola

Automation Integration

Visual flow automation for modern teams

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Letta free tier limited to 3 stateful agents; Parabola the Basic plan allows 1 user and 1,000 credits with limited AI
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Letta and Parabola actually diverge.

Attributes where Letta and Parabola differ
AttributeLettaParabola
FoundedUnknown2015

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), platforms (Web), 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 Parabola does not also cover.

Only in Parabola

  • Visual workflow builder
  • Data transformation
  • Conditional logic
  • Looping
  • Error handling
  • Monitoring
  • Scheduling
  • 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 Parabola
  • Enabling reflection during idle periods via sleep-computenot Parabola
  • Managing agent context and extracting learningsnot Parabola

Parabola

  • Workflow automation for operations and finance teamsnot Letta
  • Data integration across 1,000+ sourcesnot Letta
  • Automation and reporting workflowsnot 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

Parabola

  • The Basic plan allows 1 user and 1,000 credits with limited AI
  • No price is published for either the self serve or the business tier
  • Credits are consumed when agents run, and further credits are bought pay as you go
  • Role based access control, SSO, version history and SLAs all sit on the unpriced business plan

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

Parabola

Free

No published plan breakdown. See the Parabola review.

Which should you pick?

Choose Letta if

  • You want to start without paying.
Letta review

Choose Parabola if

  • You need visual workflow builder.
  • You want to start without paying.
  • You also want data transformation.
Parabola review

Questions people ask

Is Letta or Parabola better?
Neither clearly leads. Letta starts at Free and Parabola at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Letta or Parabola?
Letta starts at Free and Parabola at Free.
Does Letta or Parabola run on more platforms?
Both run on Web, so platform support will not decide this one for you.
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 Parabola is typically brought in for.
What can Letta do that Parabola cannot?
Parabola covers Visual workflow builder, Data transformation, Conditional logic, Looping.

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
Parabola: How much does Parabola cost?

Parabola does not publish specific pricing rates. The service uses a credit-based system where credits are consumed when agents run. Self-serve plans include a monthly credit allotment, and Business plans require a custom quote.

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
Parabola: Does Parabola offer a free plan?

Yes, Parabola offers a free tier indefinitely for self-serve users with limited credits and basic features including the Prowork agent builder and pre-built integrations.

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
Parabola: What features are included in Parabola's Business plan?

Business plans include all self-serve features plus automation engineer enablement, deployment support, proof of concept on production data, enterprise security with SSO, service level agreements, and a dedicated account manager.

Source
Parabola: Can I upgrade from free to Business later?

Yes, customers can start on free or self-serve plans and upgrade to Business plans at any time.

Source
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