CheapestCoding Long-contextBest value Get an API key
🎯 Don't want to pick? Send model: "appmo/auto" and Appmo routes each request to the cheapest model that's good enough — cutting your bill up to 40%. See how →
Models › nousresearch › Nous: Hermes 3 405B Instruct

Nous: Hermes 3 405B Instruct — pricing & benchmarks

By nousresearch · Updated 2026-07-24 · general-purpose chat

Nous: Hermes 3 405B Instruct costs $1 per 1M input tokens and $1 per 1M output tokens, with a 131K context window. It is best suited for general-purpose chat, and is available through one OpenAI-compatible Appmo API key.
$1Input / 1M
$1Output / 1M
131KContext
—Intelligence
—Coding
—GPQA %
—Speed tok/s

What Nous: Hermes 3 405B Instruct is used for

Nous: Hermes 3 405B Instruct is best suited for general-purpose chat. Access it through one Appmo API key alongside 390 other models — Appmo's optimizer can route to it automatically when it is the best value for a request.

Use it via the Appmo API (OpenAI-compatible)

curl https://appmo.com/v1/chat/completions \
  -H "Authorization: Bearer $APPMO_KEY" \
  -d '{"model":"nousresearch/hermes-3-llama-3.1-405b","messages":[{"role":"user","content":"Hello"}]}'

FAQ

How much does Nous: Hermes 3 405B Instruct cost?
Nous: Hermes 3 405B Instruct costs $1 per 1M input tokens and $1 per 1M output tokens ($1 blended), as of 2026-07-24. Prices are expected to fall as competition increases.

What is Nous: Hermes 3 405B Instruct best for?
Nous: Hermes 3 405B Instruct is best suited for general-purpose chat.

How do I use Nous: Hermes 3 405B Instruct?
Send requests to Appmo's OpenAI-compatible endpoint with model id "nousresearch/hermes-3-llama-3.1-405b" and one API key — no separate provider account needed.