Artificial intelligence · 2023

Llama 2

Meta releases open weights with a commercial licence and a chat model.

Llama 2, released in July 2023 with Microsoft, came in 7B, 13B and 70B sizes trained on 2 trillion tokens, with RLHF-tuned chat versions. Its commercial licence made open models a practical choice for businesses.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

Llama 2023
InstructGPT 2022

What it led to 1

Llama 3 2024

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)