Alternatives to Letta

The platform for building reliable AI agents and LLM applications.

LlamaIndex empowers developers to build agents that extract insights and take action on complex enterprise documents, combining industry-leading parsing with a trusted agent framework.

Model-agnostic AI memory across OpenAI, Anthropic, Gemini, DeepSeek, xAI, and Groq. Research-backed savings: 80.8% fewer prompt tokens on governance evals, 91.5% on IDE sessions. Compare Cortyxia vs M

Hebbia is an AI platform for knowledge work, automating complex tasks for finance, law, and Fortune 500 companies.

Platform for building and deploying custom AI agents connected to company knowledge and tools.

AI agents automating knowledge-intensive financial workflows like due diligence and memo generation.

Open-source tool to transform application data into accessible knowledge for AI agents.

Channel3 is building a universal database of every product on the internet, providing developers access to valuable product data.

AI skill layer enabling agents to reliably interact with over 3000 real-world tools and APIs.

Vectara provides an enterprise-ready AI Agent and Assistant platform with secure RAG.

Persistent memory layer for AI agents and applications.

Rebolt lets everyone in the company build apps and agents by speaking with AI, integrated with company tools, data, and authentication.

Ema is a Universal AI Employee platform that provides secure, compliant, and conversational AI agents for enterprises, automating complex workflows across various business functions.

AI-powered legal research platform unifying verified case law and legislative data.

Hyperspell provides an API-based memory and context layer for AI agents, enabling them to learn, reason, and recall information across various company tools.

An open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.

Zep gives AI agents enterprise-grade memory via context graphs — sub-200ms retrieval, SOC 2 compliant, validated by S&P Market Intelligence.

Norm AI builds AI-powered agents for regulatory compliance, streamlining risk identification and business integration.

Ship production AI agents with streaming tool execution, context engineering, and sandbox isolation.

An enterprise-grade, multi-agent AI platform that automates complex business workflows.

Build, ship, and manage AI agents with readable TypeScript, replayable runs, and scoped tools.

Capacitive is an AI agent platform providing secure data gateways to connect internal company data across various tools.

/dev/agents is building a next-gen operating system for AI agents to enable robust consumer experiences and radically more capable applications.

A sovereign, European, self-hostable memory operating system for AI agents, enabling secure knowledge storage and semantic search.

A data-native operating system for agents, enabling real-time data action and auditable decisions.

Open-source AI operating system for launching and scaling specialized AI agent networks.

Platform for companies to deploy AI agents globally, embed them anywhere, and connect knowledge sources.

AI-powered market intelligence platform for financial and corporate professionals.

AI-powered search engine that delivers real-time, cited answers to complex questions.

High-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.

A Mac app that combines local and cloud AI models, keeping user data on their hardware.

Niyatna builds the operating system, standards, and gates for companies ready to become agentic. Define intent, mount secure sandboxed workspaces, and verify execution under the Proof of Intent standa

AI-native customer intelligence platform transforming feedback into actionable insights.

Firm-specific AI agents that learn how your firm thinks, decides, and operates.

Aviation technology company developing SkyOS, a universal operating system for simplified aircraft control.

Chinese AI startup developing advanced large language models and AI agents, including the Kimi chatbot, with a focus on AGI research.

Low-code platform for building, iterating, and deploying AI applications, especially RAG and multi-agent systems.

AI for financial decision-making and analysis.

Managed vector database for building scalable, reliable, and accurate AI applications and search.

AI front office for independent provider groups to automate administrative tasks and improve patient engagement.

AI-powered justice intelligence platform for identifying and valuing legal claims.

AI chatbot builder that trains custom GPT-like chatbots on your own data.

AI productivity suite for legal and compliance professionals automating workflows and drafting.

AI-native operating system for Communications Service Providers (CSPs).

AI-powered research assistant for scientific literature review and data extraction.

Canonical develops and supports Ubuntu, a leading open-source operating system for cloud, servers, and edge devices.

AI-powered platform automating prior authorizations and medication access for healthcare providers.

AI platform for legal work, specializing in contract review and legal research.

A private, portable memory layer for your AI conversations.