How much does Hermes 4 405B cost on Zeplik?

Input tokens cost 12.0 credits per million and output tokens 36.0 credits per million (1 credit = $0.10; the raw provider rates are $1.00 and $3.00 per million). New accounts start with free credits.

How long can a conversation with Hermes 4 405B be?

Hermes 4 405B has a 131K-token context window (131,072 tokens), which covers the conversation plus any documents you attach.

Does Hermes 4 405B support images and tools?

Hermes 4 405B is text-only and does not support tool calling.

Hermes 4 405B

Open weight

Nous Research · Released August 2025 · Knowledge cutoff August 2024

Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research.

It is part of Nous Research's Hermes line, open-weight fine-tunes tuned for instruction following and steerability.

Facts and pricing

Provider: Nous Research
Context window: 131K tokens
Input price: 12.0 credits / 1M tokens ($1.00 raw)
Output price: 36.0 credits / 1M tokens ($3.00 raw)
Vision (image input): No
Tool calling: No
Extended reasoning: No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.

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What Hermes 4 405B is best for

Everyday chat and drafting on an open-weight model with transparent lineage

Example prompts

Prompts that suit a open weight model like Hermes 4 405B:

Draft a project update from these rough notes
Explain how HTTPS works to a curious teenager
Turn this list of features into a changelog entry
Brainstorm objections to this proposal and how to answer them

Model comparisons

Frequently asked questions

What is Hermes 4 405B?: Hermes 4 405B is an AI model by Nous Research. Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research.
How much does Hermes 4 405B cost on Zeplik?: Input tokens cost 12.0 credits per million and output tokens 36.0 credits per million (1 credit = $0.10; the raw provider rates are $1.00 and $3.00 per million). New accounts start with free credits.
How long can a conversation with Hermes 4 405B be?: Hermes 4 405B has a 131K-token context window (131,072 tokens), which covers the conversation plus any documents you attach.
Does Hermes 4 405B support images and tools?: Hermes 4 405B is text-only and does not support tool calling.

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