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Software · head to head

Airbyte vs Letta

Airbyte logo

Airbyte

Software

The open-source ELT platform

From
Free
Rated
-
Full reviewWebsite
L

Letta

Software

Machines that learn

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Airbyte has a free tier, so it costs nothing to try first.
  • Each has a real cost: Airbyte the self-managed open source Core edition has no SSO or RBAC, no multiple workspaces, no row filtering or encryption, and no monitoring integrations; Letta the Developer API plan charges $0.10 per active agent per month plus $0.00015 per second of tool execution on top of a $20 per month base and pay-as-you-go LLM usage, as of August 2026.

Where they differ

Only the attributes on which Airbyte and Letta actually diverge.

Attributes where Airbyte and Letta differ
AttributeAirbyteLetta
Starting priceFreeOn request
Pricing modelopen-sourceusage-based
Free tierYesNo
PlatformsWeb, Self-hostedWeb
Founded2020Unknown

Identical on both: user rating (Not yet rated), category (Unknown).

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 Airbyte

  • Data replication
  • Schema detection
  • ELT pipelines
  • Real-time sync
  • Data transformation
  • Monitoring
  • Custom connectors
  • 300+ connectors

Only in Letta

Nothing recorded that Airbyte does not also cover.

What people use each for

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

Airbyte

  • Replicating data from SaaS applications into a warehousenot Letta
  • Self-hosting an open source ELT pipelinenot Letta
  • Managed data replication without running infrastructurenot Letta
  • Building connectors for sources without an off-the-shelf integrationnot Letta

Letta

No use cases recorded yet. See the Letta review.

Where each one falls short

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

Airbyte

  • The self-managed open source Core edition has no SSO or RBAC, no multiple workspaces, no row filtering or encryption, and no monitoring integrations
  • Sync frequency on Core is limited compared with the managed tiers, which offer 15 minute syncs
  • Support on the free tier is community and AI only; premium support requires Pro or Enterprise
  • The free Agents plan stops at 1,000 agent operations a month and pauses capacity until the next month once hit
  • Agent overages are billed per operation at $0.004 to $0.005 once past the plan allowance

Letta

  • The Developer API plan charges $0.10 per active agent per month plus $0.00015 per second of tool execution on top of a $20 per month base and pay-as-you-go LLM usage, as of August 2026.

Pricing, plan by plan

Airbyte

Free
  • Open SourceFree
    • Self-hosted
    • Community support
    • Full features
  • Cloud$50/month
    • Cloud hosted
    • Email support
  • Enterprise$500/month
    • Dedicated support
    • Advanced features

Letta

On request

No published plan breakdown. See the Letta review.

Which should you pick?

Choose Airbyte if

  • You need data replication.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want schema detection.
Airbyte review

Choose Letta if

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

Letta review

Questions people ask

Is Airbyte or Letta better?
Neither clearly leads. Airbyte starts at Free and Letta at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Airbyte or Letta?
Airbyte has a free tier; the other does not. Paid plans start at Free for Airbyte and On request for Letta.
Does Airbyte or Letta run on more platforms?
Airbyte runs on Web, Self-hosted. Letta runs on Web.
Can I use Airbyte for free?
Yes. Airbyte has a free tier, so you can try it without paying. Letta starts at On request.
What is Airbyte best used for?
Airbyte is most often used for replicating data from saas applications into a warehouse, self-hosting an open source elt pipeline, managed data replication without running infrastructure, building connectors for sources without an off-the-shelf integration. Of those, replicating data from saas applications into a warehouse and self-hosting an open source elt pipeline are not what Letta is typically brought in for.
What can Airbyte do that Letta cannot?
Airbyte covers Data replication, Schema detection, ELT pipelines, Real-time sync.
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