nousresearch/hermes-4-405b

nousresearch· 128K ctx· llama3

open weightsstructured quant: unknown

spread (output)

2.5×

$1.20 – $3.00 · 5 providers

5 providers priced

Provider	Input	Output	Cache rd	Blended
NanoGPT relay router	$0.300	$1.20	$0.150	$0.286
Cortecs relay router	$0.996	$2.99	—	$1.18^*
Kilo Gateway relay router	$1.00	$3.00	—	$1.18^*
Nebius Token Factory relay router	$1.00	$3.00	$0.100	$0.712
OpenRouter unknown	$1.00	$3.00	—	$1.18^*

Cheapest (output)

NanoGPT

$1.20 /M

opencode.json

{
  "provider": {
    "nano-gpt": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://nano-gpt.com/api/v1"
      },
      "models": {
        "NousResearch/hermes-4-405b": {}
      }
    }
  }
}

Set NANO_GPT_API_KEY in your environment. Generated — verify against the OpenCode docs.

Output $/M over time7-day preview

Median line, min–max band. Pre-2026-09 points are catalog-recorded dates from models.dev git history, not provider effective dates.

Full price history & dynamics

This is a 7-day preview. Sign in for 30 days free; the full series and export are the API subscription.

Data: models.dev (MIT), snapshot 2026-09-20. Prices are vendor-published; verify before purchase. Methodology.