Nous
Hermes 4 405B
Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research.
At a glance
- Input / 1M
- $1
- Output / 1M
- $3
- Context
- 131K
- Max output
- 118K
- Intelligence
- 7.5
- Released
- Aug 2025
Pricing
Hermes 4 405B API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $1 |
|---|---|
| Output tokensPer 1M tokens | $3 |
| Cached input (read)Per 1M tokens | Not available |
| Cache writePer 1M tokens | Not available |
Chat message
2K in, 500 out
$3.50
per 1,000 requests
Coding task
30K in, 4K out
$42
per 1,000 requests
Long document summary
150K in, 2K out
$156
per 1,000 requests
Benchmarks
Hermes 4 405B benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
7.5
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 131K tokens
- Max output
- 118K tokens
- Input types
- Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- August 26, 2025
- Knowledge cutoff
- August 31, 2024
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
Hermes 4 405B vs other models
See how Hermes 4 405B stacks up head to head on price, benchmarks, and features.
VS
Hermes 4 405B vs GPT-4.1 Mini
Nous vs OpenAI
See comparisonVS
Hermes 4 405B vs Qwen3 VL 235B A22B Instruct
Nous vs Qwen
See comparisonVS
Hermes 4 405B vs Mistral Medium 3.1
Nous vs Mistral
See comparisonVSHermes 4 405B vs Mistral Medium 3
Nous vs Mistral
See comparisonVSHermes 4 405B vs Devstral 2 2512
Nous vs Mistral
See comparisonVSHermes 4 405B vs GLM 4.5V
Nous vs Z.ai
See comparisonAlternatives
Hermes 4 405B alternatives
Similar models worth considering, and where each one has the edge.
OpenAI
GPT-4.1 Mini
Qwen
Qwen3 VL 235B A22B Instruct
Mistral
Mistral Medium 3.1
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does Hermes 4 405B cost?
Hermes 4 405B costs $1 per 1M input tokens and $3 per 1M output tokens through the API. A typical chat message costs about $3.50 per 1,000 messages.
What is the context window of Hermes 4 405B?
Hermes 4 405B accepts up to 131K tokens of input and can write up to 118K tokens in a single response.
What is the best alternative to Hermes 4 405B?
GPT-4.1 Mini from OpenAI is a strong alternative. It offers: 1.9x cheaper output, higher intelligence score, larger 1.05m context.
Can I use Hermes 4 405B alongside other models?
Yes. Shortcut Chat sends one prompt to Hermes 4 405B and any other models you pick at the same time, so you can compare answers side by side.
Try Hermes 4 405B next to every other model.
Use Hermes 4 405B alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.