BAI-LAB MemoryOS
https://github.com/BAI-LAB/MemoryOS
Hierarchical "OS" with Storage / Updating / Retrieval / Generation modules. Short-term → mid-term via FIFO dialogue-chain; mid-term → long-term via segmented paging.
Active · Verified 2026-10-28 · fresh as of 2026-10-28 · 26 cited facts, 1 with a third-party source · Suggest a correction
At a glance
- Type
- Hierarchical: short / mid / long-term repo fix
- Tier
- T3
- Section
- Research / specialised systems
- Latest release
- V1.2 2025-07-18 repo fix
- License
- Apache-2.0 repo fix
- GitHub
- 1.4k★ +40/mo Python repo fix
- Pricing
- searched not found fix
- Funding
- not applicable — not commercial fix
- Freshness
- 2026-10-28 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source repo fix
- Developer activity
- OpenRank 0.45 (12-mo avg 2.69) · 2 participants — 2026-05 third-party fix
Memory taxonomy
- storage
- hybrid
- retrieval
- similarity
- persistence
- long-term
- update
- consolidation
- unit
- summary
- governance
- inspectable
- conflict
- n/a
When to use
Optimised for: research positioning (see memory_model)
Anti-fit: not applicable - research paper
Pros & cons
Pros
ICML 2025 venue — peer-reviewed memory-as-OS framework.
Cons
Research scope; smaller community than commercial memory layers.
Claims & capabilities
EMNLP 2025 Oral. +48.36% F1 and +46.18% BLEU-1 over baselines on LoCoMo with GPT-4o-mini.
Technical surface
- API surface
- not applicable — research paper
- Backend storage
- not applicable — research paper
- Deployment
- searched not found
- Embedding model
- not applicable — research paper
- Multi-tenancy
- not applicable — research paper
- MCP
- not applicable — research paper, no deployed product
- A2A
- not applicable — research paper, no deployed product
- OpenTelemetry
- not applicable — research paper, no deployed product
Similar systems
Other research / specialised systems in the catalog, ranked by inbound references.
- A-MEM T3
Treats memories as atomic linkable notes — explicit nod to Zettelkasten knowledge management. Dynamic linking; retroactive memory revision.
- Titans (Google) T4
Neural long-term memory module that learns to memorise at test time. Uses gradient-of-loss as "surprise" signal; adaptive weight-decay forgetting. Three variants: MAC (memory-as-context), MAG (memory-as-gate), MAL (memory-as-layer).
- EverMemOS T4
Self-organizing memory OS for structured long-horizon reasoning. Three-phase model: episodic, semantic, reconstructive.
- EVOLVE-MEM T3
Dynamic Memory Network + Hierarchical Memory Manager + Self-Improvement Engine. L0 raw embeddings, L1 contextual summaries, L2 high-level principles. NeurIPS 2025 (Scaling Environments for Agents workshop).
- LiCoMemory T4
Lightweight hierarchical graph (CogniGraph) with entities and relations as semantic indexing layers. Incremental graph construction, fast updates, low-latency inference. Nov 2025.
- MemoRAG T3
RAG framework on top of a long-context memory model. Builds global memory once, generates contextual clues at query time. TheWebConf 2025.
Sources (25 cited facts, 1 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Hierarchical: short / mid / long-term repo
- What it does & what's distinct Hierarchical "OS" with Storage / Updating / Retrieval / Generation modules. Short-term →… repo
- Claims / benefits EMNLP 2025 Oral. +48.36% F1 and +46.18% BLEU-1 over baselines on LoCoMo with GPT-4o-mini. paper
- Created 2025-05 repo
- Latest release V1.2 2025-07-18 repo
- License Apache-2.0 repo
- GitHub 1.4k★ +40/mo Python repo
- Citations 41 cites 41/yr paper
- Founders / pedigree BAI Lab (Beijing Academy of AI affiliated); no individual authors confirmed repo
- Performance +48.36% F1 vs baselines on LoCoMo (EMNLP 2025 paper) paper
- Reproducibility Too recent vendor
- Code/weights release Code public + weights closed repo
- Versioning snapshots repo
- Contradiction handling LLM resolves and overwrites repo
- Forgetting policy consolidation/summarization repo
- Validated verticals research only repo
- Optimised for research positioning (see memory_model) repo
- Pros ICML 2025 venue — peer-reviewed memory-as-OS framework. repo
- Cons Research scope; smaller community than commercial memory layers. repo
- Project & sources GitHub BAI-LAB/MemoryOS ACL Anthology arxiv 2506.06326 repo
- commit-trajectory [{"ym":"2025-05","cum":14},{"ym":"2025-06","cum":116},{"ym":"2025-07","cum":233},{"ym":"… repo
- citation-trajectory [{"year":2025,"cum":8,"infl":3},{"year":2026,"cum":9,"infl":4}] paper
- licensing-bucket open-source repo
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":2.87,"as_of":"2026-05","openrank_12mo":2.69,"openrank_current":0.45,"partici… third-party
Related systems
References (1)
- A-MEM cites — S2 isInfluential citation
Referenced by (4)
- Beyond RAG for Agent Memory cites — S2 isInfluential citation
- LightMem cites — S2 isInfluential citation
- MemBART cites — S2 isInfluential citation
- Memformers (gradient memory) cites — S2 isInfluential citation