Nous Research: Hermes 3 Llama 3.1 405b
Hermes 3 Llama 3.1 405b is a language model from Nous Research released on Aug 16, 2024. It reads text and writes text, with a 128K token context window and up to 16K tokens per reply.
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It costs $1 per million input tokens and $1 per million output tokens.
It supports tool calling and structured JSON output, and its weights are open, so you can host it yourself.
4 providers serve it, including Eden AI, Kilo Gateway and Venice AI.
- Modalities
- In / out price
- $1 / $1 per 1M
- Context
- 128K
- Max output
- 16K
- Released
- Aug 16, 2024
- Knowledge cutoff
- Dec 2023
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Hermes 3 Llama 3.1 405b pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $1 / 1M tokens | |
|---|---|---|
| Output | $1 / 1M tokens |
Hermes 3 Llama 3.1 405b providers
4 providers serve it, including Eden AI, Kilo Gateway and Venice AI. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Eden AI | $1 | $1 | – | 131K | 16K |
| Kilo Gateway | $1 | $1 | – | 131K | 16K |
| Venice AI | $1.10 | $3 | – | 128K | 16K |
| AI/ML API | $1.38 | $1.38 | – | 131K | 16K |
What Hermes 3 Llama 3.1 405b costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Hermes 3 Llama 3.1 405b through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Temperature
temperature
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Hermes 3 Llama 3.1 405b questions
How much does the Hermes 3 Llama 3.1 405b API cost?
$1 per million input tokens and $1 per million output tokens. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Hermes 3 Llama 3.1 405b?
128,000 tokens of input, and it can write up to 16,384 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Hermes 3 Llama 3.1 405b?
4 providers serve it, including Eden AI, Kilo Gateway and Venice AI. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Hermes 3 Llama 3.1 405b support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Hermes 3 Llama 3.1 405b open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was Hermes 3 Llama 3.1 405b released?
Aug 16, 2024, with training data up to Dec 2023.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.