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Automation Integration · head to head

Hevo Data vs Letta

Hevo Data logo

Hevo Data

Automation Integration

The easiest way to move data reliably

From
Free
Rated
-
Full reviewWebsite
Letta logo

Letta

Automation Integration

Machines that learn

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Hevo Data billed on events ingested rather than on connectors or seats, so the bill tracks how chatty the sources are; Letta free tier limited to 3 stateful agents
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Hevo Data and Letta actually diverge.

Attributes where Hevo Data and Letta differ
AttributeHevo DataLetta
Pricing modelusage-basedfreemium
PlatformsWeb, CloudWeb
Founded2016Unknown

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 Hevo Data

  • No-code pipeline builder
  • Real-time sync
  • Data validation
  • Error handling
  • Monitoring
  • Data transformation
  • Scheduling
  • 150+ sources

Only in Letta

Nothing recorded that Hevo Data does not also cover.

What people use each for

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

Hevo Data

  • Data pipeline and ETL managementnot Letta
  • Cloud data integrationnot Letta

Letta

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

Where each one falls short

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

Hevo Data

  • Billed on events ingested rather than on connectors or seats, so the bill tracks how chatty the sources are
  • The free plan allows 1M events a month and the Starter plan starts at $265 a month billed annually
  • Event volume is a priced tier inside each plan, at 5M, 20M or 50M on Starter
  • Usage above the plan quota is charged as on demand on top of the subscription, and the overage rate is not published anywhere on the pricing page
  • Paying monthly rather than annually raises Starter from $265 to $299

Letta

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

Pricing, plan by plan

Hevo Data

Free
  • FreeFree
    • Up to 1M events/month
    • 1-hour scheduling
    • Up to 5 users
  • Starter$265/month
    • 5M-20M events/month options
    • Up to 10 users
    • 150+ connectors
  • Professional$750/month
    • 20M-100M events/month options
    • Unlimited users
    • Hevo APIs
  • Business Critical$null/month
    • Custom quote required
    • Streaming pipelines
    • Role-based access control

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

Which should you pick?

Choose Hevo Data if

  • You need no-code pipeline builder.
  • You want to start without paying.
  • You work on Web, Cloud.
  • You also want real-time sync.
Hevo Data review

Choose Letta if

  • You want to start without paying.
Letta review

Questions people ask

Is Hevo Data or Letta better?
Neither clearly leads. Hevo Data starts at Free and Letta at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Hevo Data or Letta?
Hevo Data starts at Free and Letta at Free.
Does Hevo Data or Letta run on more platforms?
Hevo Data runs on Web, Cloud. Letta runs on Web.
Can I use Hevo Data for free?
Both have a free tier, so you can try either at no cost before committing.
What is Hevo Data best used for?
Hevo Data is most often used for data pipeline and etl management, cloud data integration. Of those, data pipeline and etl management and cloud data integration are not what Letta is typically brought in for.
What can Hevo Data do that Letta cannot?
Hevo Data covers No-code pipeline builder, Real-time sync, Data validation, Error handling.

Answered from the vendors’ own pages

Hevo Data: How much does Hevo Data cost?

Hevo Data offers a free plan (up to 1M events/month) and paid plans starting at $265/month (Starter for 5M-20M events/month) up to $750/month (Professional for 20M-100M events/month).

Source
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
Hevo Data: How are Hevo Data events counted?

Each record inserted, updated, or deleted in the destination counts as one event toward the monthly quota.

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
Hevo Data: Does Hevo Data offer annual discounts?

Yes, Hevo Data offers 12% discount for annual billing on all paid plans.

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
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