Llama 3.1 405B
Meta (via providers)Updated May 2026. Llama 3.1 405B by Meta (via providers): $3.50/M cache-miss input, $3.50/M output tokens. 128K context, 4K max output. Function Calling. Free calculator + compare 40+ models.
Input Price
$3.50
cache miss / 1M tokens
Output Price
$3.50
per 1M tokens
Context Window
128K
tokens
Specifications
| Provider | Meta (via providers) |
| Model ID | llama-3-1-405b |
| Input Price | $3.5 / 1M cache-miss tokens |
| Output Price | $3.5 / 1M tokens |
| Context Window | 128K tokens |
| Max Output | 4K tokens |
| Capabilities | textfunction_calling |
| Release Date | 2024-07 |
| Pricing Source | Official Meta (via providers) pricing |
| Price Verified | 2026-02-26 · Hosted Llama pricing depends on the third-party API provider. |
| Notes | Open-source. Pricing varies by hosting provider. |
Monthly Cost Estimates
Estimated monthly costs based on different daily usage levels (assuming 50% input / 50% output split). Input estimates use cache-miss pricing, so cache-heavy workloads can be lower.
| Daily Tokens | Monthly Cost | Annual Cost |
|---|---|---|
| 10K | $1.05 | $12.60 |
| 50K | $5.25 | $63.00 |
| 100K | $10.50 | $126.00 |
| 500K | $52.50 | $630.00 |
| 1.0M | $105.00 | $1260.00 |
About Llama 3.1 405B
Llama 3.1 405B is a large language model by Meta (via providers). It features a 128K token context window with up to 4K tokens of output per request. The model supports 2 capabilities: text, function_calling.
At $3.5 per million cache-miss input tokens and $3.5 per million output tokens, Llama 3.1 405B is positioned as a mid-range option in the Meta (via providers) lineup. Use our Token Counter to estimate how many tokens your prompts use, and our Pricing Calculator to compare costs across all models.
Llama 3.1 405B Key Details
- Pricing: $3.5/M cache-miss input tokens, $3.5/M output tokens
- Context window: 128K tokens — good for standard conversations and tasks
- Max output: 4K tokens per response
- Capabilities: text, function_calling
- Highlights: Open-source. Pricing varies by hosting provider.
- Released: 2024-07
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FAQ
How much does Llama 3.1 405B cost?
Llama 3.1 405B costs $3.5 per million cache-miss input tokens and $3.5 per million output tokens. For a typical workload of 100K input tokens/day and 50K output tokens/day, expect approximately $15.75/month before cache-hit savings.
What is Llama 3.1 405B's context window?
Llama 3.1 405B supports a context window of 128K tokens. This means your combined input prompt and output response can be up to 128K tokens. The maximum output per response is 4K tokens.
Is Llama 3.1 405B good for my use case?
Llama 3.1 405B supports text, function_calling. As a mid-range model, it balances capability and cost for most production use cases. Use our Pricing Calculator to compare with alternatives.