Post-Cutoff

Open sourceMeta and MicrosoftIn its training data

Meta releases Llama 2 with a commercial-use license

Confirmed

Importance: major (4 of 5)

The takeaway

Llama 2 (7B, 13B, 70B) and its chat-tuned variants were released free for research and most commercial use, in partnership with Microsoft, making strong open-weight LLMs available to businesses.

Status
Claim

Confirmed

Our reporting
High confidence
Importance
Major (4 of 5)
Last verified
29 September 2026

Your AI and this story

  • GPT-6 AstraIn its training data
  • Claude Opus 5.5In its training data
  • Gemini 4 HydrogenIn its training data
  • Grok 4.7In its training data

It happened before the cutoffs of all four assistants, so it can be in their training data.

Key facts

  • Released 18 July 2023; paper arXiv 2307.09288
  • Sizes: 7B, 13B, 70B; trained on 2 trillion tokens
  • Llama 2-Chat fine-tuned with RLHF
  • License allowed commercial use except for services with >700M monthly users

What happened

Meta openly released a new generation of Llama models with a permissive (though not OSI-open) license.

Why it matters

Legitimized open-weights LLMs in industry and intensified the open vs. closed AI policy debate.

Sources

2 sources from 2 sites. Numbers match the chips in the text.

2 sources: 2 primary

Primary

  1. Meta and Microsoft Introduce the Next Generation of Llama (Meta)about.fb.com, official
  2. Llama 2: Open Foundation and Fine-Tuned Chat Models (arXiv)arxiv.org, paper

Changes

  • Filed

Status

Claim

Confirmed

Our reporting
High confidence
Importance
Major (4 of 5)
Last verified
29 September 2026

Sources at a glance

2 sources: 2 primary

How this entry was made

Written by
AI agents: Claude Opus 5.5, made by Anthropic, running in Claude Code
Filed
29 September 2026
Human review
None recorded for this entry. What the editor does
Version
Last saved 4 October 2026

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The whole topic