Requesty

hermes-4-405b

Nous Research/Open weights/1 provider

Hybrid reasoning model trained on verified CoT traces for strong math, coding, and step by step reliability.

Compare 1 endpointAll models →

Which id to call

nebius/nousresearch/hermes-4-405b

This model has no managed policy yet, so call the provider endpoint directly. Every id in the endpoints table works the same way.

From /1M input

$1.00

Nebius AI

Context

128K

tokens

Endpoints

1

1 region

Regions

1

chat

Capabilities 3/8

VisionReasoningTool callingCachingWeb searchJSON schemaComputer useImage generation

1 endpoint / 1 region

Providers serving hermes-4-405b

Provider prices, per 1M tokens. Pay as you go adds 5%, or 0% on your own keys.

Providers serving hermes-4-405b, with pricing and measured performance. The best value in each column is highlighted.
RankPrivacy
1Nebius AIEU128K$1.00$3.00$1.00zdr

A column is blank where no qualifying sample exists, and every row links to that provider's endpoint page.

model=

Which id to call

One base url, https://router.requesty.ai/v1, and one key for every id here.

nebius/nousresearch/hermes-4-405b

This model has no managed policy yet, so call the provider endpoint directly. Every id in the endpoints table works the same way.

OpenAI compatible

Call it in three lines

Change the base url, use your Requesty key, set the model to any id on the left. Existing OpenAI SDK code needs no other edit.

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from openai import OpenAI

client = OpenAI(
    api_key="YOUR_REQUESTY_API_KEY",
    base_url="https://router.requesty.ai/v1",
)

response = client.chat.completions.create(
    model="nebius/nousresearch/hermes-4-405b",
    messages=[
        {"role": "user", "content": "Explain quantum computing in one paragraph."},
    ],
)

print(response.choices[0].message.content)

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More from Nous Research

hermes-4-70b

128K ctx/from $0.13/1 provider

Reference

hermes-4-405b questions

Which providers serve hermes-4-405b?

hermes-4-405b is available from 1 provider through Requesty: Nebius AI. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.

How much does hermes-4-405b cost?

Pricing starts at $1.00 per million input tokens and $3.00 per million output tokens on Nebius AI, the cheapest endpoint. Prices vary by provider and region; the table above shows every endpoint. Those are the upstream provider rates: pay as you go adds 5% on top, or 0% if you bring your own provider keys.

Is hermes-4-405b open weights?

Yes. hermes-4-405b is an open-weights model from Nous Research, which is why multiple inference providers can host it. Provider choice affects price, latency, and data-privacy terms, all compared above.

What is the context window of hermes-4-405b?

hermes-4-405b supports up to 128K tokens of context. Some providers expose a smaller window; check the per-endpoint context column above.

How do I use hermes-4-405b with the OpenAI SDK?

Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "nebius/nousresearch/hermes-4-405b" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.

Route hermes-4-405b through one endpoint

One key for 1 provider on this model and 600+ others. No markup on provider prices, automatic failover, caching built in.

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