Letta
by Letta
At a glance
Stateful agent platform and open-source harness built around persistent memory and context management.
memory developer-tools
- Licence
- Not recorded
- Category
- Platforms & Infrastructure
- Business model
- Freemium
- Availability
- Not recorded
- Launched
- Not recorded
Overview
Typical uses include Persistent context for AI agents; Personalization across conversations. Documented capabilities: Agents retain state and memory across conversations; Configurable tools, skills and context management; CLI, cloud agents and self-hosted app server options.
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Key features
- Agents retain state and memory across conversations
- Configurable tools, skills and context management
- CLI, cloud agents and self-hosted app server options
Use cases
- Persistent context for AI agents
- Personalization across conversations
Pricing
Free supports up to 3 stateful agents with your own model access. Pro is USD 20 per month; developer API plans have separate base and usage charges, including active agents and tool execution. A personal plan is not an unlimited API entitlement.
Record details
Provenance, dates and links are kept here so the main sections stay about the product itself.
Links, dates and provenance
- Record updated
- 2026-11-03
- Pricing
- docs.letta.com ↗
- Documentation
- docs.letta.com ↗
- Canonical URL
- https://globalaiproductindex.com/products/letta/
Selection profile
Every field says where its value comes from. "Unknown" means we have not confirmed it — it does not mean the product lacks the feature.
Selection profile11 fields7 unknown
- Tasks it fits
- Automation agents
Editorial classification of the documented features; not a product-performance test.
Suggest a correction - How you use it
- Command line
Editorial classification of the documented features; not a product-performance test.
Suggest a correction - Runs on
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Where it runs
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Works offline
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Official service region
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Public API
- Yes
Editorial classification of the documented features; not a product-performance test.
Suggest a correction - Licence
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Commercial use
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Interface languages
- Not recorded
This product-specific field was not established in this entry’s source review.
Suggest a correction - Billing
- Subscription Usage-based Free allowance: Limited Subscription required: No
Prices are the vendor’s advertised entry price and exclude taxes; always confirm on the vendor’s own page.
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Where each value comes from
- Tasks it fits
- Our inference
- How you use it
- Our inference
- Runs on
- Unknown
- Where it runs
- Unknown
- Works offline
- Unknown
- Official service region
- Unknown
- Public API
- Our inference
- Licence
- Unknown
- Commercial use
- Unknown
- Interface languages
- Unknown
Key facts and their evidence
Each fact lists the conditions it holds under, the page it was read from and the day it was checked.
-
Capability: Agents retain state and memory across conversations Verified 2026-11-03 docs.letta.com ↗
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Frequently asked questions
Where does Letta fit in a workflow?
Stateful agent platform and open-source harness built around persistent memory and context management. Agents retain state and memory across conversations.
What costs and limits should I compare before choosing Letta?
Free supports up to 3 stateful agents with your own model access. Pro is USD 20 per month; developer API plans have separate base and usage charges, including active agents and tool execution. A personal plan is not an unlimited API entitlement.
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- Agentforce — Salesforce's enterprise AI agent platform for building, testing, and running autonomous agents across service, sales, and employee workflows.
All Letta alternatives → · All Platforms & Infrastructure products →
Sources
- Letta — official product ↗
- Letta — official documentation and terms ↗
- Letta — official documentation and terms ↗
This record was last reviewed on 2026-11-03.
Machine-readable record: /api/products/letta.json · Spot an error? Suggest a correction