Lettavs
n8n
n8n: The fair-code workflow automation tool
Letta
Machines that learn
As of 29 August 2026, Letta has a free plan and paid plans start at $20/month. Stateful AI agent platform where agents keep persistent memory and evolve through experience. Softwr lists it under Automation Integration.
Overview
What Letta does
Stateful AI agent platform where agents keep persistent memory and evolve through experience.
What people use it for
- Building agents with memory for continuous learning
- Enabling reflection during idle periods via sleep-compute
- Managing agent context and extracting learnings
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Letta.
- Free tier limited to 3 stateful agents
- Pro tier capped at 20 stateful agents
- API Plan usage charges apply beyond base tier
Cross-shopped
What people choose instead of Letta
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- LettavsMicrosoft Power Automate
Microsoft Power Automate: Automate tasks across cloud and on-premises apps
- LettavsZapier
Zapier: Automate your work across 7,000+ app integrations
- LettavsMuleSoft
MuleSoft: Integration platform as a service (iPaaS) with robust API management
Pricing
What Letta costs
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Free
Free
- Limited agents
- Limited Letta Auto usage
- Bring your own API keys
Pro
$20 /mo
- Weekly and monthly Letta Auto quota
- Pay-as-you-go overage
- Up to 20 stateful agents
API Plan
$20 /mo
- Unlimited agents
- $0.10/active agent/month
- $0.00015/second for tool execution
- API key authentication
- Pay-as-you-go for LLM usage
Teams Pro
$20 /mo
- Per seat pricing
- Add teammates
- Letta Auto quota
- Agent sharing with access control
Enterprise
On request
- Volume-based pricing
- Increased quotas
- Role-based access control
- SAML/OIDC SSO
- Dedicated support
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
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.
SourceHow 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.
SourceDoes 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.
SourceKeep looking
Where to go from Letta
- Letta alternativesEvery product people weigh against it
- Letta pricingPlans, floors and what the tiers exclude
- Letta badgesWhich rules it meets, and the figure behind each
- All Automation Integration softwareThe full category
- Best Automation Integration softwareThe shortlist, and how it was cut
Best Automation Integration software for
Compare Letta with
- n8n
- Zapier
- Microsoft Power Automate
- MuleSoft
- Autonoly
- Trigger.dev
- Inngest
- Dagster
- Merge
- CrewAI
- Alloy Automation
- Browser Use
- Stitch
- Talend
- Tealium
- Tines
- Xano
- Trigger.dev
Other Automation Integration software
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Free plan10 researched notesEmbedded integration platform and unified API, repositioned from ecommerce automation towards AI agent connectivity
Pricing on request13 researched notesGive Browser Use a natural-language task and receive completed work from a managed browser agent
Free, then $29/mo11 researched notesBuild and deploy fully managed AI agents and workflows
Free, then $10/mo11 researched notes
Softwr does not host reviews and shows no star rating for Letta, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
More on Letta
Letta alternatives
What people switch to, and what they give up
Letta pricing
Every tier, and where the cost actually lands
Compare Letta
Put it head to head with anything we hold
Letta badge
Its rating, and an embed for your own site
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