# LLaMA 3.1

LLaMA 3.1 is an AI model released by Meta on Jul 23 2024. It has open weight. At release it scored 14% on BullshitBench v2.

## Facts

| Field | Value |
| --- | --- |
| Model | LLaMA 3.1 |
| Developer | Meta |
| Release date | Tuesday, Jul 23 2024 |
| Licensing | Open Weight |

## Benchmark scores published at release

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| BullshitBench v2 | 14% | [BullshitBench](https://github.com/petergpt/bullshit-benchmark) | Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. |

## About LLaMA 3.1

Llama 3.1, released July 23, 2024, delivered the first open-weight frontier-class model: the 405B variant traded blows with GPT-4o and Claude 3.5 Sonnet on standard benchmarks while being free to download. The 8B and 70B sizes were refreshed alongside it, and the whole family gained a 128K context window and stronger multilingual coverage.

Meta paired the release with an updated license permitting synthetic-data generation — making 405B a popular teacher model for distillation — and an open letter from Mark Zuckerberg arguing open-source AI was the path forward. It stood as the open-weights capability ceiling until DeepSeek V3 arrived that December.

## Questions and answers

### When was LLaMA 3.1 released?

LLaMA 3.1 was released by Meta on Tuesday, Jul 23 2024.

### Who made LLaMA 3.1?

LLaMA 3.1 was built by Meta. Develops the open-weight Llama series of models. Committed to open-source AI research.

### What benchmark scores did LLaMA 3.1 get?

LLaMA 3.1 reports 1 tracked benchmark score — BullshitBench v2: 14%. Scores are the figures published at release by Meta.

### Is LLaMA 3.1 open source?

Partly. LLaMA 3.1 is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.

### What came before and after LLaMA 3.1?

Meta's previous tracked release was LLaMA 3 (8B/70B) on Apr 18 2024, 96 days earlier. It was followed by LLaMA 3.2 on Sep 25 2024.


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Canonical page: https://aireleasetracker.com/model/meta/llama-3.1
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.