Who developed Llama 2 70B Chat and how large is it?

Llama 2 70B Chat is developed by meta-llama, a model with 70b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

How does Llama 2 70B Chat perform on standard benchmarks?

Llama 2 70B Chat has the following published scores: LMSYS ELO 1155. Compare against reference models on this page or on the LLM Explorer leaderboards.

Llama 2 70B Chat by meta-llama

Name: Llama 2 70B Chat
Author: meta-llama

Llama 2 70B Chat is an open-source language model by meta-llama. Features: 70b LLM, License: llama2, LLM Explorer Score: 0.2, ELO: 1155.

Arxiv:2307.09288 En Facebook Llama Llama2 Meta Pytorch Region:us

Model Card on HF 🤗: https://huggingface.co/meta-llama/Llama-2-70b-chat

Llama 2 70B Chat Benchmarks

LMSys ELO 1155 vs 1272 (so35) -9.2%

^nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").

What is the LLM Explorer Rank (Score)

Llama 2 70B Chat Parameters and Internals

LLM Name	Llama 2 70B Chat
Repository 🤗	https://huggingface.co/meta-llama/Llama-2-70b-chat
Model Size	70b
Updated	2026-08-04
Maintainer	meta-llama
Supported Languages	en
Model Architecture	MambaSSM
License	llama2
Vocabulary Size	-1

Rank the Llama 2 70B Chat capabilities

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Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

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