Letta
Letta is an AI-powered AI Agents tool — AI agents with memory. Best for: AI Agents. Pricing: Freemium (GateOnAI Score: 49/100).
AI agents with memory
Letta creates autonomous AI agents that retain information across interactions, allowing them to build context over days or weeks. Each agent stores conversation history, user preferences, and task outcomes in a secure memory store, so follow‑up requests reference prior work without re‑prompting. Users can define agent personalities, set goals, and upload documents for the agent to cite, making the system act like a personal assistant that remembers project details. The platform supports natural language commands to start, pause, or hand off tasks, and agents can trigger webhooks or call external APIs based on stored triggers. The interface offers a visual workspace where multiple agents can be linked in a workflow, enabling collaborative problem solving such as research aggregation, code review, or customer support routing. Letta provides built‑in integrations with popular services like Slack, Zapier, and Google Drive, letting agents fetch files, post updates, or schedule events automatically. A versioned memory log lets users inspect what the agent has learned, revert to earlier states, or export logs for compliance. Pricing includes a free tier with up to three active agents and 5 GB of memory; paid plans raise limits, add priority processing, and unlock advanced analytics dashboards. Typical users include product managers who need a briefing bot that recalls past meetings, developers building AI‑driven automation, and marketers creating campaign briefs that evolve over time. The tool’s API grants programmatic control over agent creation, memory queries, and task execution, fitting into CI/CD pipelines or custom dashboards. Documentation is concise, with code snippets in Python and JavaScript, and support is provided via community forums and email. Letta positions itself against generic chat models by emphasizing persistent memory as a core differentiator, making it suitable for long‑term, context‑rich applications.
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Works Well With
Tools that Letta genuinely connects with, based on real input/output compatibility data (not just shared category):
- Apollo IO - AI sales intelligence with 275M contacts
- Ideogram - AI image generator excelling at text within images.
- Prezi AI - AI presentation with dynamic visual storytelling
- DeFiLlama AI - Open-source DeFi analytics with AI-powered insights.