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OpenKey

Hermes 3 405B Instruct

Nous ResearchReleased Aug 16, 2024

Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the...

Try in playground
Context window
131K tokens
Max output
16K tokens
Input
text
Output
text
Tokenizer
Llama3
Knowledge cutoff
Dec 31, 2023
Released
Aug 16, 2024

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$1.00$0.030$1.03
Output$1.00$0.030$1.03

Supported parameters

  • frequency_penalty
  • logit_bias
  • max_tokens
  • min_p
  • presence_penalty
  • repetition_penalty
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • top_k
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model nousresearch/hermes-3-llama-3.1-405b.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nousresearch/hermes-3-llama-3.1-405b",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="nousresearch/hermes-3-llama-3.1-405b",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "nousresearch/hermes-3-llama-3.1-405b",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Hermes 3 405B Instruct cost via API?
Through OpenKey, Hermes 3 405B Instruct costs $1.03 per 1M input tokens and $1.03 per 1M output tokens. That is the provider price ($1.00 / $1.00) plus a flat 3% fee — nothing else.
What is Hermes 3 405B Instruct's context window?
Hermes 3 405B Instruct accepts up to 131K tokens of context and returns up to 16K tokens per request.
Is Hermes 3 405B Instruct OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "nousresearch/hermes-3-llama-3.1-405b" using any OpenAI SDK — only the base URL and API key change.
What inputs does Hermes 3 405B Instruct support?
Hermes 3 405B Instruct accepts text input and produces text output. Its knowledge cutoff is Dec 31, 2023.

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