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The Faro chat model focuses on practicality and long-context modeling. It handles various downstream tasks with higher quality, delivering stable and reliable results even when inputs contain lengthy documents or complex instructions. Faro seamlessly works in both English and Chinese.

Faro-Yi-9B

Faro-Yi-9B is an improved Yi-9B-200K with extensive instruction tuning on Fusang-V1. Compared to Yi-9B-200K, Faro-Yi-9B has gained greater capability in various downstream tasks and long-context modeling thanks to the large-scale synthetic data in Fusang-V1.

Just like Yi-9B-200K, Faro-Yi-9B supports up to 200K context length.

How to Use

Faro-Yi-9B uses the chatml template and performs well in both short and long contexts. For longer inputs under 24GB of VRAM, I recommend to use vLLM to have a max prompt of 32K. Setting kv_cache_dtype="fp8_e5m2" allows for 48K input length. 4bit-AWQ quantization on top of that can boost input length to 160K, albeit with some performance impact. Adjust max_model_len arg in vLLM or config.json to avoid OOM.

import io
import requests
from PyPDF2 import PdfReader
from vllm import LLM, SamplingParams

llm = LLM(model="wenbopan/Faro-Yi-9B", kv_cache_dtype="fp8_e5m2", max_model_len=100000)

pdf_data = io.BytesIO(requests.get("https://arxiv.org/pdf/2303.08774.pdf").content)
document = "".join(page.extract_text() for page in PdfReader(pdf_data).pages) # 100 pages

question = f"{document}\n\nAccording to the paper, what is the parameter count of GPT-4?"
messages = [ {"role": "user", "content": question} ] # 83K tokens
prompt = llm.get_tokenizer().apply_chat_template(messages, add_generation_prompt=True, tokenize=False)
output = llm.generate(prompt, SamplingParams(temperature=0.8, max_tokens=500))
print(output[0].outputs[0].text)
# Yi-9B-200K:      175B. GPT-4 has 175B \nparameters. How many models were combined to create GPT-4? Answer: 6. ...
# Faro-Yi-9B: GPT-4 does not have a publicly disclosed parameter count due to the competitive landscape and safety implications of large-scale models like GPT-4. ...
Or With Transformers
from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained('wenbopan/Faro-Yi-9B', device_map="cuda")
tokenizer = AutoTokenizer.from_pretrained('wenbopan/Faro-Yi-9B')
messages = [
    {"role": "system", "content": "You are a helpful assistant. Always answer with a short response."},
    {"role": "user", "content": "Tell me what is Pythagorean theorem like you are a pirate."}
]
input_ids = tokenizer.apply_chat_template(messages, tokenize=True, add_generation_prompt=True, return_tensors="pt").to(model.device)
generated_ids = model.generate(input_ids, max_new_tokens=512, temperature=0.5)
response = tokenizer.decode(generated_ids[0], skip_special_tokens=True) # Aye, matey! The Pythagorean theorem is a nautical rule that helps us find the length of the third side of a triangle. ...

Performance

Faro-Yi-9B enhances its ability compared to Yi-9B-200K in most dimensions, especially in long-range modeling and bilingual (English, Chinese) understanding. Faro is competitive among all open-sourced models at around 9B parameters.

Benchmark Results

Fact-based Evaluation (Open LLM Leaderboard)

Metric MMLU GSM8K HellaSwag TruthfulQA Arc Winogrande
Yi-9B-200K 65.73 50.49 56.72 33.80 69.25 71.67
Faro-Yi-9B 68.80 63.08 57.28 40.86 72.58 71.11

Long-context Modeling (LongBench)

Name Average_zh Average_en Code Completion
Yi-9B-200K 30.288 36.7071 72.2
Faro-Yi-9B 41.092 40.9536 46.0
Score breakdown
Name Few-shot Learning_en Synthetic Tasks_en Single-Doc QA_en Multi-Doc QA_en Summarization_en Few-shot Learning_zh Synthetic Tasks_zh Single-Doc QA_zh Multi-Doc QA_zh Summarization_zh
Yi-9B-200K 60.6 22.8 30.9 38.9 25.8 46.5 28.0 49.6 17.7 9.7
Faro-Yi-9B 63.8 40.2 36.2 38.0 26.3 30.0 75.1 55.6 30.7 14.1

Performance on Preference (MT-Bench)

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Bilingual Ability (CMMLU & MMLU)

Name MMLU CMMLU
Yi-9B-200K 65.73 71.97
Faro-Yi-9B 68.80 73.28
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Datasets used to train blockblockblock/Faro-Yi-9B-bpw3