Reasoning model for deliberate analysis, multi-step problem solving, and tool use
Hermes 4 405B by nousresearch is offered by 5 providers on this page. Its reference price is $1.00 per 1M input tokens and $3.00 per 1M output tokens. The lowest paid channel is NanoGPT at $0.30 / $1.20 per 1M, about 3.3× below the reference price. That channel is a third-party gateway, so confirm its availability and rate limits before depending on it.
The context window is 131,072 tokens at the reference host, but hosts report different limits, from 128,000 to 131,072, so the usable window depends on the provider you pick. It supports reasoning and structured output. The weights are open, so it can also be self-hosted or served through a gateway of your choice. Providers report the capability flags inconsistently, so verify a specific feature against the host you plan to use. Its training knowledge cuts off at 2024-08-31.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT | Gateway | $0.30 | $1.20 | $0.15 | — | 128,000 ⚠ | 8,192 | |
| Cortecs | Gateway | $1.00 | $2.99 | — | — | 128,000 ⚠ | 128,000 | |
| OpenRouter | Gateway | $1.00 | $3.00 | — | — | 131,072 | 117,964 | |
| Nebius Token Factory NousResearch/Hermes-4-405B | Cloud | $1.00 | $3.00 | $0.10 | $1.25 | 131,072 | 8,192 | |
| Kilo Gateway | Gateway | $1.00 | $3.00 | — | — | 131,072 | 117,964 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Interleaved thinking (reasoning between tool calls) is declared by 1 of 5 providers.
1 / 5 providers expose no reasoning control (reasoning_options: []).