Hermes 4 70B: Pricing, Context Window & Benchmarks
70Bby Nous
Hermes 4 70B is a hybrid reasoning model from Nous Research, built on Meta-Llama-3.1-70B. It introduces the same hybrid mode as the larger 405B release, allowing the model to either respond directly or generate explicit <think>...</think> reasoning traces before answering. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#enable-reasoning-with-default-config) This 70B variant is trained with the expanded post-training corpus (~60B tokens) emphasizing verified reasoning data, leading to improvements in mathematics, coding, STEM, logic, and structured outputs while maintaining general assistant performance. It supports JSON mode, schema adherence, function calling, and tool use, and is designed for greater steerability with reduced refusal rates.
What you can do with Hermes 4 70B
Everyday Q&A and clear explanations
Writing help (emails, posts, summaries)
Idea generation and brainstorming
Learning support with step-by-step guidance
Benchmarks not available
This model isn't listed on Artificial Analysis yet. Showing OpenRouter specs below.
| Metric | Value |
|---|---|
| Provider | Nous |
| Context Window | 131,072 tokens |
| Input Price | $0.13/1M tokens |
| Output Price | $0.40/1M tokens |
| Release Date | Aug 26, 2025 |
| Modalities | text |
| Capabilities | N/A |
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Frequently asked questions
What is Hermes 4 70B good for?
Use Hermes 4 70B for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.
How much does Hermes 4 70B cost?
Pricing is based on usage. Current rates are $0.13/1M tokens for input and $0.40/1M tokens for output.
Can I try Hermes 4 70B for free?
Yes. You can start a chat instantly and test the model before deciding on a plan.
Does Hermes 4 70B support images or audio?
Hermes 4 70B focuses on text-based tasks.
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Pricing, context, and capability data are sourced from OpenRouter.
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