Best Alternatives to Letta (formerly MemGPT)

Agent Cloud is an open-source RAG platform for building LLM chat apps grounded on your own data, with 260+ data connectors, built-in chunking/embedding, sync to Qdrant or Pinecone, and self-host or hosted cloud options.

Intelligent news monitoring platform that creates customizable AI agents to track topics across 10,000+ sources daily, deduplicates coverage into organized clusters, and generates personalized briefings.

From Free

AI-powered Excel workspace that generates VBA scripts, builds dashboards, and automates data analysis with persistent file storage — not just formula suggestions, but full project execution.

From Free (Pro from $20/mo)

Cognee is an open-source agent memory platform that builds a hybrid knowledge graph and vector index from your data so LLM agents recall structured facts, not just nearest-neighbour text chunks. Free Hobby, usage-based Growth, custom Enterprise.

From Free

Enterprise AI platform from the co-creators of the transformer architecture, offering the Command family of language models for agentic workflows, RAG, and secure business automation.

From Free trial available; enterprise pricing on request

Enterprise-grade AI memory infrastructure that enables persistent contextual understanding across conversations through advanced graph-based storage, semantic retrieval, and real-time relationship mapping for production AI agents and applications

Enterprise Agentic RAG platform that helps organizations build, manage, and monitor AI-powered knowledge systems for scientific research, R&D, and regulated industries

From Custom (Enterprise)

Kira Systems leverages multi-layer AI to automatically extract, analyze, and review contract provisions across thousands of legal documents, delivering 90%+ accuracy for M&A due diligence, compliance audits, and large-scale contract review.

From Custom

LangChain memory primitives for long-horizon agent workflows.

From Free

Enterprise memory management platform for AI applications. Managed cloud service with advanced analytics, SSO, and enterprise security controls.

From Free

Milvus: Open-source vector database to analyze and search billions of vectors with millisecond latency at enterprise scale.

From Free

Open-source memory server for LLM chat applications, built in Rust with Redis storage and automatic conversation summarization.

From Free

Build, run, and manage production-ready AI agents with a Python framework for agent systems, memory, tools, and AgentOS deployment.

From Free

Open-source RAG engine with deep document understanding, chunk visualization, citation tracking, hybrid search, and agent workflow capabilities for enterprise knowledge bases.

From Free

PostgreSQL-native vector search via pgvector integrated into Supabase's managed backend — store embeddings alongside your relational data with auth, real-time subscriptions, and row-level security.

From Free

Visual AI product discovery platform for apparel and fashion ecommerce that powers camera-based search, automated product tagging, and personalized recommendation engines to increase conversion rates and average order value.

From Custom Quote

Taskade is an AI-native productivity platform that combines task management, note-taking, mind mapping, and team collaboration with built-in AI agents. Users can create custom AI agents that automate workflows, generate content, and manage projects autonomously. The platform offers over 1,000 AI-powered templates, structured workspaces with multiple views (lists, boards, calendars, org charts), and integrations with tools like Slack, Google Drive, and Zapier. Taskade differentiates itself from competitors like Notion AI and ClickUp by embedding autonomous AI agents directly into every workspace, enabling hands-free task orchestration and content generation across teams.

AI-powered drag-and-drop platform for creating native mobile applications with advanced logic, API integration, and cross-platform deployment

From Freemium

Professional-grade AI image enhancement suite featuring industry-leading upscaling, denoising, and restoration capabilities for photographers, videographers, and content creators. Topaz AI leverages cutting-edge machine learning models to dramatically improve image and video quality through intelligent enhancement algorithms that understand and preserve important visual details. The platform offers specialized tools for different enhancement needs including Photo AI for comprehensive image improvement, Video AI for footage enhancement, and Gigapixel AI for extreme upscaling, making it an essential toolkit for professionals requiring superior image quality.

From $199

An AI-powered document intelligence platform that transforms unstructured documents into structured, actionable data. Trellis leverages LLMs to extract, classify, and analyze information from complex documents at scale — supporting PDFs, scanned images, spreadsheets, and more — with a developer-friendly API and customizable output schemas for seamless integration into enterprise workflows.

Kanban-based project management platform by Atlassian that lets teams organize workflows visually with drag-and-drop boards, built-in Butler automation, and Power-Up integrations across 200+ apps.

Serverless vector database with pay-per-request pricing, REST API for edge runtimes, and built-in embedding generation. Free tier includes 10K queries/day.

From Free