Hermes 4 405B

nousresearch/hermes-4-405b

Maker: Nous Research, United States
Released: 2025-08-26
Knowledge cutoff: 2024-08-31
Family: hermes
Weights: open
Tasks: text.chat, text.reasoning, code
Cheapest offering: OpenRouter, about $0.002005 for a typical text.chat call

Try it in the sandbox Use it from the API

Offerings

Provider	Model id at the provider	Status	Price per 1M tokens	Per-unit prices	Limits	Capabilities (level)
OpenRouter	`nousresearch/hermes-4-405b`	ga	Input: $1 Output: $3 Cache read: $0.2 Since 2026-11-03 · models.dev, MIT	none	Context: 131,072 tokens Max output: 117,964 tokens	`input.text` claimed `output.text` claimed `structured_output` claimed `reasoning` claimed

Quality scores

No quality score for this model yet.

Use it from the API

Look this model up, or ask for the best model for its task on the providers that offer it. See the quickstart and the API reference.

Look up this model

curl 'https://rhumbdata.com/v1/models/nousresearch/hermes-4-405b' \
  -H "Authorization: Bearer $RHUMB_KEY"

Resolve text.chat on its providers

curl 'https://rhumbdata.com/v1/resolve?task=text.chat&providers=openrouter' \
  -H "Authorization: Bearer $RHUMB_KEY"

Built from catalog version 2026-11-04.3 of 2026-11-04. Prices are list prices per 1M tokens unless marked otherwise; every score shows its source's notice (see Attributions).