Nous Research, open weights

# Hermes 3 405B Instruct

> Hermes 3 405B Instruct by Nous Research. API: $1 in / $1 out per M tokens. 131K context. Scores, sources and comparisons.
- Canonical page: https://noometry.com/models/hermes-3-405b-instruct
- Last updated: 2026-10-10
- Title: Hermes 3 405B Instruct Benchmarks, Price & Rank (October 2026)

Hermes 3 405B Instruct is a Nous Research model tracked on Noometry for pricing and specifications. API pricing starts at $1 per million input tokens and $1 per million output tokens, with a 131K-token context window.

Last verified October 10, 2026

## Specifications

- **Noometry rank:** Unranked
- **Index score:** Not ranked
- **Evidence:** 0 results
- **Provider:** [Nous Research](https://noometry.com/providers/nous-research)
- **Released:** Unknown
- **Weights:** Open weights
- **Reasoning:** Unknown
- **Context window:** 131K
- **Max output:** 16K
- **Input price:** $1 / M
- **Output price:** $1 / M
- **Blended price:** $1 / M
- **Output speed:** Not measured
- **Value:** Not ranked
- **Knowledge cutoff:** Unknown
- **Input:** text
- **Hugging Face:** [NousResearch/Hermes-3-Llama-3.1-405B](https://huggingface.co/NousResearch/Hermes-3-Llama-3.1-405B)

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## Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

No public benchmark results are tracked for Hermes 3 405B Instruct yet.

## API pricing by provider

Hermes 3 405B Instruct API prices
| Route | Input $/M | Output $/M | Cached input $/M | Checked |
| --- | --- | --- | --- | --- |
| [openrouter](https://openrouter.ai/nousresearch/hermes-3-llama-3.1-405b) | $1 | $1 | — | 2026-10-10 |

[All Nous Research API prices →](https://noometry.com/llm-pricing/nous-research) [Estimate your cost →](https://noometry.com/tools/cost-calculator)

## Compare Hermes 3 405B Instruct

-   [Hermes 3 405B Instruct vs GPT-6 Astra](https://noometry.com/compare/gpt-6-astra-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Claude Fable 5.1](https://noometry.com/compare/claude-fable-5-1-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Claude Opus 5.5](https://noometry.com/compare/claude-opus-5-5-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Claude Opus 5](https://noometry.com/compare/claude-opus-5-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Claude Fable 5](https://noometry.com/compare/claude-fable-5-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs GPT-6.1 Sol](https://noometry.com/compare/gpt-6-1-sol-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Gemini 3.8 Flash](https://noometry.com/compare/gemini-3-8-flash-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Kimi K3](https://noometry.com/compare/hermes-3-405b-instruct-vs-kimi-k3)
-   [Hermes 3 405B Instruct vs Grok 4.6](https://noometry.com/compare/grok-4-6-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Qwen3.8 Max](https://noometry.com/compare/hermes-3-405b-instruct-vs-qwen3-8-max)
-   [Hermes 3 405B Instruct vs GLM-5.3](https://noometry.com/compare/glm-5-3-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs Muse Spark 1.3](https://noometry.com/compare/hermes-3-405b-instruct-vs-muse-spark-1-3)
-   [Hermes 3 405B Instruct vs DeepSeek V4 Pro](https://noometry.com/compare/deepseek-v4-pro-vs-hermes-3-405b-instruct)
-   [Hermes 3 405B Instruct vs MiMo-V2.6-Pro](https://noometry.com/compare/hermes-3-405b-instruct-vs-mimo-v2-6-pro)

## Other Nous Research models

-   [Hermes 3 70B Instruct](https://noometry.com/models/hermes-3-70b-instruct)
-   [Hermes 4 405B](https://noometry.com/models/hermes-4-405b)

## Frequently asked questions

### How good is Hermes 3 405B Instruct?

Hermes 3 405B Instruct is a Nous Research model tracked on Noometry for pricing and specifications. API pricing starts at $1 per million input tokens and $1 per million output tokens, with a 131K-token context window.

### How much does Hermes 3 405B Instruct cost?

Hermes 3 405B Instruct costs $1 per million input tokens and $1 per million output tokens on openrouter.

### What is Hermes 3 405B Instruct's context window?

Hermes 3 405B Instruct accepts up to 131K tokens of input and can write up to 16K tokens in one response.

### Is Hermes 3 405B Instruct open source?

Yes. Hermes 3 405B Instruct's weights are downloadable from Hugging Face (NousResearch/Hermes-3-Llama-3.1-405B); check the license for commercial terms.

### Cite this page

Noometry. (2026). Hermes 3 405B Instruct benchmarks and pricing. Retrieved October 10, 2026, from https://noometry.com/models/hermes-3-405b-instruct

Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/models/hermes-3-405b-instruct.md).