Meta · General language
Llama 3.1 405B Instruct
Now mainly a teacher model: its licence explicitly permits using outputs to train other models, which is the remaining reason to run something this expensive when Llama 3.3 70B matches it on most chat benchmarks. Meta charges nothing and hosts nothing — both prices -1.
Open weights · Community or custom license · Data checked September 6, 2026 · Not a hands-on evaluation
Model ID meta-llama/Llama-3.1-405B-Instruct
- Parameters
- 405B
- Architecture
- Not recorded
- Context window
- 128,000 tokensMaximum input
- Max output
- Not recordedPer response
- Input price
- Not published
- Output price
- Not published
- Cached input
- Not published
- Blended price
- Not available3:1 input to output
- Knowledge cutoff
- 2023-12
- Released
- 2024-07-23
- Status
- ga
- Size band
- 120B and above
License and openness
Llama 3.1 405B Instruct is released under the Llama 3.1 Community License Agreement. This is a community or custom license with its own conditions, which can include acceptable-use rules, user thresholds or naming requirements. Read it before commercial use. License terms can change between versions; confirm the text published with the weights you download.
Capabilities
| Input modalities | text |
|---|---|
| Output modalities | text |
What it is for
Meta charges nothing and hosts nothing — both prices -1.
Cost at list price
| Input | Not published |
|---|---|
| Output | Not published |
| Cached input | Not published |
| Blended, 3:1 | Not available |
The provider publishes no per-token price for this model. Any price you see elsewhere belongs to a third-party host, and running the weights yourself has hardware costs instead.
Estimate a workload across all models ↗Sources
- Source: github.com ↗
- Meta pricing ↗
- API docs ↗
- Full reference record for Llama 3.1 405B Instruct ↗
- Meta in the reference ↗
Sources checked September 6, 2026. Specifications and prices change without notice; confirm against the provider before you commit.
Other open-weight models from Meta
- Muse Glimmer 30B · 30B dense
- Llama 4 Scout · 109B total · 17B active
- Llama 4 Maverick · 400B total · 17B active
- Llama 3.3 70B Instruct · 70B
- Llama 3.2 90B Vision Instruct · 90B
- Llama 3.2 11B Vision Instruct · 11B
- Llama 3.2 3B Instruct · 3B
- Llama 3.2 1B Instruct · 1B
- Llama 3.1 70B Instruct · 70B
- Llama 3.1 8B Instruct · 8B