AI Model Watch
Models / Meta

Llama 3.1 405B Instruct

GA

Open-weight, text-only, 405B dense, 128k context. License: Llama 3.1 Community License. Released 2024-07-23 alongside 8B/70B. Hosted price NOT reliably extractable in this pass: OpenRouter slug is 'meta-llama/llama-3.1-405b-instruct' (131k ctx) but the per-token figures did not render; Together AI reportedly does NOT serve 405B on its serverless API (their 405B model page states it is not available serverless), and third-party reports put serverless 405B around $3.00-$3.50 per 1M elsewhere (unverified). Prices left null rather than guessed. Source URL is the Llama 3.1 collection card (lists 8B

Provider
Meta
Status
GA
Input price
—
Output price
—
Cached input
—
Blended price
—
Context window
128,000 tokens (128K)
Max output
—
Modality
text
Knowledge cutoff
2023-12
Released
23 Jul 2024
API string
meta-llama/Llama-3.1-405B-Instruct

Source: Meta official documentation ↗

See also

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Llama 3.1 405B Instruct vs Claude Opus 4.7→

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Llama 3.1 405B Instruct vs Claude Opus 4.6→

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Llama 3.1 405B Instruct vs Claude Opus 4.5→

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