Llama 3.1 405B Instruct API pricing
Standard tier, blended at 3:1 input to output: $3.50 per million tokens.
Together AI charges $3.50 per million input tokens and $3.50 per million output tokens for Llama 3.1 405B Instruct. 6 of the models nearest it in price are cheaper on a blended basis.
Against the models nearest in price
Standard tiers, blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| Llama 3.1 405B Instruct This model | Together AI | $3.50 | $3.50 | 4,096 | $3.50 | ↗ |
| GPT-4.1 | OpenAI | $2.00 | $8.00 | 1,047,576 | $3.50 | ↗ |
| o3 | OpenAI | $2.00 | $8.00 | 200,000 | $3.50 | ↗ |
| GPT-5.1 | OpenAI | $1.25 | $10.00 | 272,000 | $3.44 | ↗ |
| GPT-5 | OpenAI | $1.25 | $10.00 | 272,000 | $3.44 | ↗ |
| Gemini 2.5 Pro | Google AI | $1.25 | $10.00 | 1,048,576 | $3.44 | ↗ |
| GPT-5.1 Codex | OpenRouter | $1.25 | $10.00 | 400,000 | $3.44 | ↗ |
| Mistral Large | OpenRouter | $2.00 | $6.00 | 128,000 | $3.00 | ↗ |
| Grok 4.5 | xAI | $2.00 | $6.00 | 500,000 | $3.00 | ↗ |
Prices last checked: . Methodology
Questions
How much does Llama 3.1 405B Instruct cost per million tokens?
$3.50 per million input tokens and $3.50 per million output tokens. At a 3:1 input to output mix that blends to $3.50. Checked 28 Oct 2026.
What would Llama 3.1 405B Instruct cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $273.00 a month on the standard tier.
What is the context window for Llama 3.1 405B Instruct?
4,096 tokens of input, with up to 4,096 tokens of output.
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