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README.md
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---
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tags:
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- text-generation
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- agent
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- tool-use
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- long-context
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license: other
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language:
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- en
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pipeline_tag: text-generation
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---
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# LIMI: Less is More for Agency
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## 📌 Table of Contents
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- [Overview](#overview)
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- [Model Details](#model-details)
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- [Dataset](#dataset)
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- [Quick Start](#quick-start)
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- [Prompting](#prompting)
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- [Evaluation](#evaluation)
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- [Limitations](#limitations)
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- [License](#license)
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- [Citation](#citation)
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## Overview
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LIMI is an agentic model fine‑tuned from GLM‑4.5 (355B) using compact, high‑quality data to emphasize:
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- Targeted capabilities: tool use, multi‑turn correction, spec compliance
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- Long‑context reasoning with tokenizer‑filtered samples (≤128k tokens)
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- OpenAI‑style `messages` with optional function/tool calls
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## Model Details
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- Base model: `zai-org/GLM-4.5`
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- Context: up to 128k tokens (training budget)
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- Training framework: slime
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- Training data: curated conversations from [GAIR/limi](https://huggingface.co/datasets/GAIR/limi)
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## Key Results
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| Model | Agency Bench FTFC | Agency Bench SR | Agency Bench RC | Training Samples |
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|-------|--------|---------|---------|-----------------|
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| LIMI (Ours) | **71.7** | **74.2** |**74.6**| 78 |
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| GLM-4.5 | 37.8 | 50.0 | 47.4 | 100k+ |
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## Model Zoo
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Our LIMO model is available on Hugging Face 🤗:
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| Model | Backbone | Size | Link |
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|---|---|---|---|
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| LIMI | [GLM‑4.5](https://huggingface.co/zai-org/GLM-4.5) | 355B | https://huggingface.co/GAIR/LIMI |
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| LIMI‑Air | [GLM‑4.5‑Air](https://huggingface.co/zai-org/GLM-4.5-Air) | 106B | https://huggingface.co/GAIR/LIMI-Air |
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## Datasets
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We release our datasets through Hugging Face 🤗:
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- Name: `GAIR/LIMI`
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- Summary: curated agentic SFT data (OpenAI `messages`, optional `tools`, normalized tool‑call arguments), filtered by tokenizer to ≤128k tokens; current release contains ~78 high‑quality samples.
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- Link: https://huggingface.co/datasets/GAIR/LIMI
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## Quick Start
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<details>
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<summary>Start with HF Transformers</summary>
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```python
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from transformers import AutoModelForCausalLM, AutoTokenizer
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import torch
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model = AutoModelForCausalLM.from_pretrained(
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"GAIR/LIMI", torch_dtype="auto", device_map="auto", trust_remote_code=True
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)
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tok = AutoTokenizer.from_pretrained("GAIR/LIMI", trust_remote_code=True)
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messages = [
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{"role": "system", "content": "You are a helpful assistant tasked with discovering mathematical function structures for scientific systems."},
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{"role": "user", "content": "Modify the equation.py function, considering the physical meaning and relationships of the inputs."}
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]
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text = tok.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
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inputs = tok(text, return_tensors="pt").to(model.device)
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out = model.generate(
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**inputs,
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max_new_tokens=4096,
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temperature=0.6,
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top_p=0.95,
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do_sample=True,
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)
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print(tok.decode(out[0][inputs['input_ids'].shape[1]:], skip_special_tokens=True))
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```
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</details>
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<details>
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<summary>Start with VLLM</summary>
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```python
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from vllm import LLM, SamplingParams
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from transformers import AutoTokenizer
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llm = LLM(model="GAIR/LIMI", trust_remote_code=True)
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tok = AutoTokenizer.from_pretrained("GAIR/LIMI", trust_remote_code=True)
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text = tok.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
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out = llm.generate(text, SamplingParams(temperature=0.6, max_tokens=4096, top_p=0.95))
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print(out[0].outputs[0].text)
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```
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</details>
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## Prompting
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- Messages follow OpenAI chat format; include a grounding system message when helpful.
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- Example:
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```json
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[
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{"role": "system", "content": "You are a helpful assistant tasked with discovering mathematical function structures for scientific systems."},
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{"role": "user", "content": "Modify the equation.py function, considering the physical meaning and relationships of the inputs."}
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]
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```
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## Evaluation
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- We report FTFC (First‑Turn Functional Completeness), SR@R (Success Rate at R), and RC@R (Remaining Chances at R) with R=3.
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- See the paper for experimental protocol and scores.
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## Limitations
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- May produce incorrect tool arguments or overfit to frequent schemas
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- Not safety‑filtered for sensitive domains; use with guardrails and oversight
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## License
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- Inherits base model (GLM‑4.5) terms; verify upstream license before deployment
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## Citation
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```bibtex
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@article{LIMI2025,
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title = {Less is More for Agentic Intelligence},
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author = {LIMI Authors},
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year = {2025},
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journal = {arXiv preprint arXiv:2502.03387}
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}
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```
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