Hermes 3 70B Instruct
Summary
Hermes 3 70B Instruct is an open-weight language model from Nousresearch, released on 18 Aug 2024. It accepts text and generates text, with a 131K-token context window and up to 16K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.70 per million input tokens and $0.70 per million output tokens (OpenRouter), across 1 provider we track.
Hermes 3 is a generalist language model with many improvements over [Hermes 2](/models/nousresearch/nous-hermes-2-mistral-7b-dpo), including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the...
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Nousresearch |
|---|---|
| Release date | 18 Aug 2024 [OpenRouter] |
| Status | Generally available |
| Weights | Open weights [Hugging Face] |
| License | llama3 [Hugging Face] |
| Parameters | 70.6B [Hugging Face] |
| Context window | 131K (131,072 tokens) [OpenRouter] |
| Max output | 16K tokens [OpenRouter] |
| Knowledge cutoff | 31 Dec 2023 [OpenRouter] |
| Input | Text [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | No [OpenRouter] |
| Tool calling | No [OpenRouter] |
| Structured output | Yes [OpenRouter] |
| Hugging Face | NousResearch/Hermes-3-Llama-3.1-70B [Hugging Face] |
Hermes 3 70B Instruct API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter nousresearch/hermes-3-llama-3.1-70b | $0.70 | $0.70 | – | 131K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Hermes 3 70B Instruct?
Hermes 3 70B Instruct has a context window of 131,072 tokens (131K) and can generate up to 16,384 tokens in a single response, according to OpenRouter.
How much does the Hermes 3 70B Instruct API cost?
Hermes 3 70B Instruct is listed from $0.70 per million input tokens and $0.70 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
Is Hermes 3 70B Instruct open source?
Hermes 3 70B Instruct is an open-weight model: its weights are published on Hugging Face as NousResearch/Hermes-3-Llama-3.1-70B under the llama3 license. Check the license terms before commercial use.
When was Hermes 3 70B Instruct released?
Nousresearch released Hermes 3 70B Instruct on 18 Aug 2024, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.