ExpeL
LLM agents are experiential learners. AAAI 2024.
Active · Verified 2026-10-28 · fresh as of 2026-10-28 · 20 cited facts, 0 with a third-party source · Suggest a correction
At a glance
- Type
- LLM agents as experiential learners paper fix
- Tier
- T3
- 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
- 2026-10-28 fix
- Layer
- agent-infra repo fix
Memory taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- cross-session
- update
- extraction
- unit
- episode
- governance
- inspectable
- conflict
- llm-arbitrate
When to use
Optimised for: not applicable - research paper
Anti-fit: not applicable - research paper
Pros & cons
Pros
Defines LLM agents as experiential learners — explicit experience-extraction across tasks; AAAI 2024.
Cons
Extraction quality bounded by base model; experience storage scales with task count.
Claims & capabilities
LLM agent extracts knowledge as natural language from training tasks without parameter updates; in-context learning over accumulated experiences; AAAI 2024. Headline: 59% success on ALFWorld, beating ReAct (40%) and matching/exceeding Reflexion without task reattempts; baselines: ReAct and Act agents; primary datasets: HotpotQA (100 val), ALFWorld (134 solvable), WebShop (100), FEVER.
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 (19 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 LLM agents as experiential learners paper
- What it does & what's distinct LLM agents are experiential learners. AAAI 2024. paper
- Claims / benefits LLM agent extracts knowledge as natural language from training tasks without parameter u… paper
- Modalities text paper
- Created 2023-08-20 (arxiv 2308.10144 submitted August 20 2023; AAAI 2024) paper
- Mindshare 481 cites · 14.8/mo · 213* / 25 forks · 57 influential SS cites paper
- Citations 309 cites 103/yr paper
- Founders / pedigree Andrew Zhao et al. — CMU; AAAI 2024 paper
- Memory volume / scale no scale claim — research (AAAI 2024) paper
- Performance 59% ALFWorld success (vs ReAct 40%) paper
- Reproducibility Independently reproduced: official LeapLabTHU/ExpeL (213* / 25 forks); 481 cites with su… repo
- Code/weights release Code public + weights closed — https://github.com/LeapLabTHU/ExpeL · stale (last commit … repo
- Schema evolution schema with migration paper
- Contradiction handling LLM resolves and overwrites paper
- Pros Defines LLM agents as experiential learners — explicit experience-extraction across task… paper
- Cons Extraction quality bounded by base model; experience storage scales with task count. paper
- Project & sources AAAI 2024 paper
- citation-trajectory [{"year":2024,"cum":2,"infl":0},{"year":2025,"cum":10,"infl":3},{"year":2026,"cum":11,"i… paper
- taxonomy-three-layer-rollup agent-infra repo
Related systems
References (1)
- Reflexion cites — S2 isInfluential citation
Referenced by (4)
- G-Memory cites — S2 isInfluential citation
- H²R cites — S2 isInfluential citation
- MemEvolve cites — S2 isInfluential citation
- MIA — Memory Intelligence Agent cites — S2 isInfluential citation