MemReasoner
https://openreview.net/forum?id=ODcMy97cVZ
IBM Research. Memory-augmented LLM architecture for multi-hop reasoning. Iteratively re-reads a temporal latent memory with bidirectional GRUs until readout stabilises. NeurIPS 2024.
Active · Verified 2026-05-14 · fresh as of 2026-05-14 · 19 cited facts, 0 with a third-party source · Suggest a correction
At a glance
- Type
- Iterative bidirectional-GRU re-read vendor fix
- Tier
- T3
- Created
- 2024-10-04 (submitted to NeurIPS 2024 OpenReview Oct 4 2024; published Dec 10 2024) vendor fix
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- not applicable — not commercial fix
- Funding
- not applicable — not commercial fix
- Freshness
- 2026-05-14 fix
- Layer
- agent-infra repo fix
Memory taxonomy
- storage
- kv-cache
- retrieval
- attention
- persistence
- session
- update
- overwrite
- unit
- kv-token
- governance
- n/a
- conflict
- n/a
When to use
Optimised for: not applicable - research paper
Anti-fit: not applicable - research paper
Pros & cons
Pros
Reasoning over memory store as a discrete inference step.
Cons
Research-stage; reasoning quality bounded by base model.
Claims & capabilities
+18% on multi-hop QA. Generalises better than off-the-shelf LLMs and existing recurrent models on tests where required facts are scattered up to 128k tokens.
Technical surface
- API surface
- not applicable — research paper
- Backend storage
- not applicable — research paper
- Deployment
- not applicable — not a deployable product
- 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 recent method papers — theorized, no distinct product in the catalog, ranked by inbound references.
- Compressive Transformer T3
Maintains recent states in full resolution while compressing older memories with learned compression functions. DeepMind.
- MemGPT v2 / agent-tools T3
Already in catalog as the foundational MemGPT paper. Note: Letta is the productionised successor (cross-listed).
- Transformer-XL T3
Extends context through segment-level recurrence + caching of hidden states from prior segments. Foundational long-context architecture.
- Generative Agents T3
Park et al. — landmark agent-simulation paper. Reflection + memory stream + retrieval enable believable agent behavior.
- MemoryBank T3
Enhances LLMs with long-term memory. Early influential paper.
- Reflexion T3
Language agents with verbal reinforcement learning.
Sources (18 cited facts, 0 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Iterative bidirectional-GRU re-read vendor
- What it does & what's distinct IBM Research. Memory-augmented LLM architecture for multi-hop reasoning. Iteratively re-… vendor
- Claims / benefits +18% on multi-hop QA. Generalises better than off-the-shelf LLMs and existing recurrent … vendor
- Modalities text vendor
- Created 2024-10-04 (submitted to NeurIPS 2024 OpenReview Oct 4 2024; published Dec 10 2024) vendor
- Founders / pedigree IBM Research; openreview.net/forum?id=ODcMy97cVZ vendor
- Memory volume / scale no scale claim — research (NeurIPS 2024) vendor
- Performance +18% on multi-hop QA; generalises to tests where required facts are scattered up to 128K… vendor
- Reproducibility Too recent vendor
- Code/weights release Paper only vendor
- Consistency strong vendor
- Versioning none vendor
- Schema evolution schema locked vendor
- Forgetting policy LRU eviction vendor
- Pros Reasoning over memory store as a discrete inference step. vendor
- Cons Research-stage; reasoning quality bounded by base model. vendor
- Project & sources OpenReview (NeurIPS 2024) IBM Research vendor
- taxonomy-three-layer-rollup agent-infra repo