Nous

Hermes 4 405B

nousresearch/hermes-4-405b

Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research. It introduces a hybrid reasoning mode, where the model can choose to deliberate internally with...

Input

$1.3 / 1M tokens

Output

$3.9 / 1M tokens

Context

131K tokens

Capabilities

✓ Streaming○ Tool / function calling✓ JSON / structured output○ Vision (image input)

Call this model

Pass nousresearch/hermes-4-405b as the model. Change only the base URL from your existing OpenAI SDK setup.

quickstart.sh

curl https://modeldatabase.com/v1/chat/completions \
  -H "Authorization: Bearer $MDB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nousresearch/hermes-4-405b",
    "messages": [{"role":"user","content":"Hello!"}]
  }'

Prices are final — the routing margin is already included. See the full pricing table or the API docs.