Model Library
Nous ResearchReleased August 27, 2025Hermes 4 405B
Nous Research · Released August 27, 2025
Intelligence score
9
At a glance
- Intelligence
- 9
- Speed
- 38.6tokens/sec
- Latency
- 2.38stime to first token
- Input price
- $1.00per 1M tokens
- Output price
- $3.00per 1M tokens
- Context window
- 130Ktokens
- Parameters
- 406billions
Summary
Comparison summary
Hermes 4 - Llama-3.1 405B (Reasoning) scores 9 (estimated) on the Artificial Analysis Intelligence Index, placing it at the lower end among other open weight models of similar size (median: 25). Hermes 4 - Llama-3.1 405B (Reasoning) generates output at 38.6 tokens per second (based on the median across providers serving the model), which is at the lower end compared to other open weight models of similar size (median: 61.7 t/s). Hermes 4 - Llama-3.1 405B (Reasoning) costs $1.00 per 1M input tokens (at the higher end, median: $0.59) and $3.00 per 1M output tokens (somewhat higher than average, median: $2.20), based on the median across providers serving the model.
Specifications
Technical specifications
| Model name | Hermes 4 405B |
|---|---|
| Provider | Nous Research |
| Release date | August 27, 2025 |
| Intelligence score | 9 |
| Speed | 38.6 tokens/sec |
| Latency (TTFT) | 2.38s |
| Input price | $1.00 / 1M tokens |
| Output price | $3.00 / 1M tokens |
| Context window | 130,000 tokens |
| Parameters | 406B |
| Reasoning | Yes |
| Input modalities | text |
| Output modalities | — |
| Open weights | Yes |
| License | META LLAMA 3 COMMUNITY LICENSE AGREEMENT |
| API availability | — |
| Source | Model Intelligence legacy profile: hermes-4-llama-3-1-405b-reasoning |
Pricing
Token prices
Price per 1M tokens
Hermes 4 405B, as listed in the catalog record
- Input$1.00
- Output$3.00
| Token type | Price per 1M |
|---|---|
| Input | $1.00 |
| Output | $3.00 |
Model Intelligence legacy profile: hermes-4-llama-3-1-405b-reasoning
FAQ · 19
Frequently asked questions
Hermes 4 - Llama-3.1 405B (Reasoning) was released on August 27, 2025.
Hermes 4 - Llama-3.1 405B (Reasoning) was created by Nous Research.
Hermes 4 - Llama-3.1 405B (Reasoning) scores 9 (estimated) on the Artificial Analysis Intelligence Index, placing it at the lower end among other open weight models of similar size (median: 25).
Hermes 4 - Llama-3.1 405B (Reasoning) generates output at 38.6 tokens per second (based on the median across providers serving the model), which is at the lower end compared to other open weight models of similar size (median: 61.7 t/s).
Hermes 4 - Llama-3.1 405B (Reasoning) has a time to first token (TTFT) of 2.38s (based on the median across providers serving the model), which is somewhat higher than average compared to other open weight models of similar size (median: 2.01s).
Hermes 4 - Llama-3.1 405B (Reasoning) costs $1.00 per 1M input tokens (at the higher end, median: $0.59) and $3.00 per 1M output tokens (somewhat higher than average, median: $2.20), based on the median across providers serving the model.
Hermes 4 - Llama-3.1 405B (Reasoning) costs $1.00 per 1M input tokens and $3.00 per 1M output tokens (based on the median across providers serving the model). For a blended rate (7:2:1 cache hit/input/output ratio), this is $1.20 per 1M tokens. Pricing may vary by provider.
Yes, Hermes 4 - Llama-3.1 405B (Reasoning) is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Hermes 4 - Llama-3.1 405B (Reasoning) supports text input.
Hermes 4 - Llama-3.1 405B (Reasoning) supports text output.
No, Hermes 4 - Llama-3.1 405B (Reasoning) does not support image input. It can only process text.
No, Hermes 4 - Llama-3.1 405B (Reasoning) is not multimodal. It only supports text input.
Hermes 4 - Llama-3.1 405B (Reasoning) has a context window of 130k tokens. This determines how much text and conversation history the model can process in a single request.
Yes, Hermes 4 - Llama-3.1 405B (Reasoning) is open weights. The model weights are publicly available and can be downloaded for self-hosting.
Hermes 4 - Llama-3.1 405B (Reasoning) has 406 billion parameters.
Hermes 4 - Llama-3.1 405B (Reasoning) is released under the META LLAMA 3 COMMUNITY LICENSE AGREEMENT license. This license allows commercial use.
Hermes 4 - Llama-3.1 405B (Reasoning) achieves a score of 9 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Yes, Hermes 4 - Llama-3.1 405B (Reasoning) is available via API through 1 provider.
Hermes 4 - Llama-3.1 405B (Reasoning) is available through 1 API provider.