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Automation Integration · head to head

Dify vs Letta

Dify logo

Dify

Automation Integration

The Platform for Production-Ready Agentic Workflows

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: Dify free tier limited to 200 monthly message credits; Letta free tier limited to 3 stateful agents
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Dify and Letta actually diverge.

Attributes where Dify and Letta differ
AttributeDifyLetta

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), platforms (Web), user rating (Not yet rated), category (Automation Integration).

What people use each for

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

Dify

  • AI workflow automationnot Letta
  • Custom application deploymentnot Letta

Letta

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

Where each one falls short

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

Dify

  • Free tier limited to 200 monthly message credits
  • Professional tier supports only 3 team members

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

Dify

Free
  • SandboxFree
    • 200 monthly message credits
    • 1 workspace
    • 5 apps
  • Professional$590/year
    • 5,000 monthly message credits
    • 3 team members
    • 50 apps
  • Team$1590/year
    • 10,000 monthly message credits
    • 50 team members
    • 200 apps

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 Dify if

  • You want to start without paying.
Dify review

Choose Letta if

  • You want to start without paying.
Letta review

Questions people ask

Is Dify or Letta better?
Neither clearly leads. Dify 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, Dify or Letta?
Dify starts at Free and Letta at Free.
Does Dify or Letta run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Dify for free?
Both have a free tier, so you can try either at no cost before committing.
What is Dify best used for?
Dify is most often used for ai workflow automation, custom application deployment. Of those, ai workflow automation and custom application deployment are not what Letta is typically brought in for.

Answered from the vendors’ own pages

Dify: How much does Dify cost?

Dify Cloud offers a free Sandbox tier, Professional at $590/year with 5,000 monthly credits, and Team at $1,590/year with 10,000 monthly credits.

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
Dify: Is Dify free to use?

Yes, Dify offers a free Sandbox tier with 200 monthly message credits, 1 workspace, 5 apps, and 50MB storage. Community edition is free and open-source.

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
Dify: What are Dify's team collaboration limits?

Professional tier supports 3 team members. Team tier supports 50 team members. Enterprise plans with custom team sizes require contacting sales.

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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