Honcho (Plastic Labs)
Memory library/service for stateful agents that reasons over stored messages to build 'peer' representations (theory-of-mind style user models) queryable via a dialectic API; used as Hermes Agent's and OpenClaw's user-modelling backend. integrated into Hermes Agent and OpenClaw; public evals at evals.honcho.dev
Active · Verified 2026-10-23 · fresh as of 2026-10-23 · 19 cited facts, 2 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Tier
- T3
- Section
- Dedicated memory layers
- Created
- 2023-09-10 repo fix
- Latest release
- last commit 2026-10-21 repo fix
- GitHub
- https://github.com/plastic-labs/honcho (7730★) repo fix
- Pricing
- searched not found fix
- Funding
- searched not found fix
- Freshness
- 2026-10-23 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source vendor fix
- Accelerator
- betaworks-camp-2023 third-party fix
- SDK languages
- python, rest, typescript repo fix
- Protocols
- mcp-server repo fix
- Developer activity
- OpenRank 12.3 (12-mo avg 9.29) · 67 participants — 2026-09 third-party fix
Memory taxonomy
- storage
- relational
- retrieval
- agentic
- persistence
- long-term
- update
- extraction
- unit
- profile
- governance
- inspectable
- conflict
- llm-arbitrate
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
Continual learning for stateful agents. Better context. Fewer tokens.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- searched not found
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- searched not found
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Honcho (Plastic Labs) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other dedicated memory layers in the catalog, ranked by inbound references.
- Mem0 T1
Universal memory layer for AI agents. Three concurrent stores (vector + graph + KV); LLM-extracted facts; concurrent retrieval via ThreadPoolExecutor.
- Zep & Graphiti T1
Bi-temporal knowledge graph (event time + ingestion time). Strong on chronological reasoning and contradiction tracking. Graphiti is the open-source core.
- Cognee T1
"Extract–Cognify–Load" pipeline that turns raw input into a typed, queryable knowledge graph for agent recall.
- Hindsight (Vectorize) T1
Standalone memory service from Vectorize. Open source. Biomimetic four-network design (World, Bank, Observation, Opinion). Ships an MCP memory server.
- Letta / MemGPT T1
Originated as MemGPT (UC Berkeley), where the model pages its own memory between context, recall and archival tiers. The product now centres on Letta Code, a stateful agent harness whose agents rewrite their own memory, skills and prompts over time.
- Memori T2
Structured, persistent memory layer for AI agents. Open source.
Sources (18 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Product vendor
- What it does & what's distinct Memory library/service for stateful agents that reasons over stored messages to build 'p… vendor
- Claims / benefits Continual learning for stateful agents. Better context. Fewer tokens. vendor
- Created 2023-09-10 repo
- Latest release last commit 2026-10-21 repo
- License AGPL-3.0 vendor
- GitHub https://github.com/plastic-labs/honcho (7730★) repo
- Mindshare 7730 GitHub stars repo
- Project & sources https://honcho.dev/ ; https://github.com/plastic-labs/honcho vendor
- cost-token-budget yes vendor
- adoption-accelerator betaworks-camp-2023 third-party
- architecture-deployment-locus hybrid vendor
- licensing-bucket open-source vendor
- positioning-platform-vs-product platform vendor
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":172.69,"as_of":"2026-09","openrank_12mo":9.29,"openrank_current":12.3,"parti… third-party
- sdk-languages python,rest,typescript repo
- protocol-support mcp-server repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-23 Added to the catalog #222