Who developed Llama 2 7B Chat and how large is it?

Llama 2 7B Chat is developed by meta-llama, a model with 7b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

How does Llama 2 7B Chat perform on standard benchmarks?

Llama 2 7B Chat has the following published scores: LMSYS ELO 1108. Compare against reference models on this page or on the LLM Explorer leaderboards.

Llama 2 7B Chat by meta-llama

Name: Llama 2 7B Chat
Author: meta-llama

Llama 2 7B Chat is an open-source language model by meta-llama. Features: 7b LLM, License: llama2, LLM Explorer Score: 0.2, ELO: 1108.

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

Model Card on HF 🤗: https://huggingface.co/meta-llama/Llama-2-7b-chat

Llama 2 7B Chat Benchmarks

LMSys ELO 1108 vs 1272 (so35) -12.9%

^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 7B Chat Parameters and Internals

Model Type

text generation

Use Cases

Areas:

commercial, research

Primary Use Cases:

assistant-like chat

Limitations:

Use in any manner that violates laws; Use in languages other than English

Additional Notes

Intended for English; includes new human-annotated examples.

Training Details

Data Volume:

2 trillion tokens

Methodology:

Uses supervised fine-tuning (SFT) and reinforcement learning with human feedback (RLHF)

Context Length:

4000

Hardware Used:

Meta's Research Super Cluster, third-party cloud compute

Model Architecture:

Auto-regressive language model with optimized transformer architecture

Safety Evaluation

Methodologies:

internal evaluations library

Ethical Considerations:

Testing has been in English and cannot cover all scenarios; potential outputs cannot be predicted in advance.

Input Output

Input Format:

text only

Accepted Modalities:

text

Output Format:

text only

Performance Tips:

Specific formatting with INST and <> tags, BOS and EOS tokens for chat versions.

LLM Name	Llama 2 7B Chat
Repository 🤗	https://huggingface.co/meta-llama/Llama-2-7b-chat
Model Size	7b
Updated	2026-07-22
Maintainer	meta-llama
Supported Languages	en
Model Architecture	MambaSSM
License	llama2
Vocabulary Size	-1

Rank the Llama 2 7B Chat capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

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

Best Alternatives to Llama 2 7B Chat

Best Alternatives	Context / RAM	Downloads	Likes
Mistral 7B Instruct V0.3	32K / 14.5 GB	5676238	2725
Mistral 7B V0.3	32K / 14.5 GB	175628	588
Mosslight 7B	0K / 14.5 GB	116	1
Mistral 7B Instruct V0.3	0K / 14.5 GB	6	0
Mathstral 7B V0.1	0K / 29 GB	4802	243
Llama 2 7B	0K / GB	149	4521

Note: green Score (e.g. "73.2") means that the model is better than meta-llama/Llama-2-7b-chat.