Softwr

Automation Integration · head to head

Letta vs Tray.io

Letta logo

Letta

Automation Integration

Machines that learn

From
Free
Rated
-
Full reviewWebsite
Tray.io logo

Tray.io

Automation Integration

The intelligent integration platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Letta free tier limited to 3 stateful agents; Tray.io now rebranded Tray.ai; pricing page names three tiers, Pro (3 workspaces, 7 day insights), Team (20 workspaces, 30 day insights) and Enterprise (unlimited workspaces, 180 day insights, SSO, HIPAA), but publishes no figures and requires a demo or sales call for a quote
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Letta and Tray.io actually diverge.

Attributes where Letta and Tray.io differ
AttributeLettaTray.io
Pricing modelfreemiumsubscription
PlatformsWebWeb, Api
FoundedUnknown2015

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 Letta

Nothing recorded that Tray.io does not also cover.

Only in Tray.io

  • Low-code workflow builder
  • API integrations
  • Webhooks
  • Conditional logic
  • Error handling
  • Rate limiting
  • Data transformation
  • Authentication

What people use each for

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

Letta

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

Tray.io

  • Workflow Automationnot Letta
  • Data Integrationnot Letta
  • Process Automationnot Letta
  • App Integrationnot Letta
  • API Connectivitynot 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

Tray.io

  • Now rebranded Tray.ai; pricing page names three tiers, Pro (3 workspaces, 7 day insights), Team (20 workspaces, 30 day insights) and Enterprise (unlimited workspaces, 180 day insights, SSO, HIPAA), but publishes no figures and requires a demo or sales call for a quote

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

Tray.io

Free
  • Starter$50/month
    • 20 workflows
    • 50 integrations
    • Community support
  • Professional$150/month
    • Unlimited workflows
    • 500+ integrations
    • Email support
  • Enterprise$500/month
    • Custom workflows
    • Dedicated support
    • Advanced security

Which should you pick?

Choose Letta if

  • You want to start without paying.
Letta review

Choose Tray.io if

  • You need low-code workflow builder.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want api integrations.
Tray.io review

Questions people ask

Is Letta or Tray.io better?
Neither clearly leads. Letta starts at Free and Tray.io at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Letta or Tray.io?
Letta starts at Free and Tray.io at Free.
Does Letta or Tray.io run on more platforms?
Letta runs on Web. Tray.io runs on Web, Api.
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 Tray.io is typically brought in for.
What can Letta do that Tray.io cannot?
Tray.io covers Low-code workflow builder, API integrations, Webhooks, Conditional logic.

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
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
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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