Honcho

Agent-enablingFreemium

Open-source reasoning and memory system for stateful AI agents

Overview

About Honcho

This summary uses submitted and public product material. Only source-mapped claims are documentation reviewed.

Honcho is an AGPL-licensed memory system with a managed service for stateful agents. It stores conversations and entities, reasons over accumulated history, and maintains evolving state across sessions.

So agents can…

Remember users, agents, and other entities across sessions
Track changing preferences, relationships, and contradictions
Retrieve compact, reasoned context instead of replaying full histories

Listing decision

Why Honcho is listed

Honcho provides memory storage, background reasoning, representations, and retrieval that applications and agents integrate; it supplies state infrastructure rather than acting as the primary autonomous agent.

Before you choose

Fit and limitations

Best for

Agents and applications that need evolving representations of users, agents, projects, or other entities across conversations and sessions.

Known limitations

A self-hosted deployment requires operating the API and background worker plus PostgreSQL with pgvector and at least one configured LLM provider; hosted reasoning is usage-priced by query level.

Sources

Sources and verification

First-party unless marked otherwise. Each link supports only its adjacent claim.

Honcho source repository
Plastic Labs documents Honcho as stateful-agent memory infrastructure with managed and self-hosted modes, REST service logic, Python and TypeScript SDKs, and agent-tool integrations.
official repository · accessed Sep 3, 2026
Honcho pricing
Honcho publishes usage-based prices for memory ingestion and multiple reasoning levels on its managed service.
official pricing · accessed Sep 3, 2026
Honcho license
The Honcho server repository is licensed under AGPL-3.0.
official license · accessed Sep 3, 2026