Last refreshed 2026-06-15. Next refresh: weekly.
Why use Hermes-4-405B on OpenRouter?
OpenRouter offers Hermes-4-405B with pay-as-you-go pricing at $1.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Hermes-4-405B across 2 providers to find the best fit for your use caseInput / 1M
$1.00
Output / 1M
$3.00
Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: nousresearch/hermes-4-405bModel ID
nousresearch/hermes-4-405bRequest example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
nousresearch/hermes-4-405b.Gotchas
- Use provider model ID "nousresearch/hermes-4-405b", not the LLMReference slug "hermes-4-405b".
Compare Hermes-4-405B Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Nous Portal | $0.09 | $0.37 |
| OpenRouter | $1.00 | $3.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.00 |
| Output tokens | $3.00 |
Capabilities
Reasoning
About Hermes-4-405B
Hermes 4's 405B hosted variant on Nous Portal. The portal describes it as the largest Hermes 4 model, focused on advanced reasoning and creative depth rather than inference speed or cost.
Get Started
Model Specs
Released2025-09-22
Parameters405B
Context128k
Knowledge cutoff2023-12