Softwr

Automation & Integration · head to head

Letta vs Inngest

L

Letta

Automation & Integration

Machines that learn

From
On request
Rated
-
Full reviewWebsite
I

Inngest

Automation & Integration

Unbreakable Agents. Invisible Infra.

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: 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.; Inngest the free Hobby tier pauses function execution entirely once its 50,000 monthly executions are used, rather than allowing pay-as-you-go overage, as of August 2026.

Where they differ

Only the attributes on which Letta and Inngest actually diverge.

Attributes where Letta and Inngest differ
AttributeLettaInngest

Identical on both: starting price (On request), pricing model (usage-based), free tier (No), platforms (Web), user rating (Not yet rated), category (Automation & Integration).

Where each one falls short

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

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.

Inngest

  • The free Hobby tier pauses function execution entirely once its 50,000 monthly executions are used, rather than allowing pay-as-you-go overage, as of August 2026.

Pricing, plan by plan

Letta

On request

No published plan breakdown. See the Letta review.

Inngest

On request

No published plan breakdown. See the Inngest review.

Which should you pick?

Choose Letta if

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

Letta review

Choose Inngest if

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

Inngest review

Questions people ask

Is Letta or Inngest better?
Neither clearly leads. Letta starts at On request and Inngest at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Letta or Inngest?
Letta starts at On request and Inngest at On request.
Does Letta or Inngest run on more platforms?
Both run on Web, so platform support will not decide this one for you.
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Related pages

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