LLMOpen weights
Hermes 4 405B
Nous Research
Updated May 22, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Specifications
- Type
- LLM
- Access
- Open weights
- Released
- August 26, 2025
- Context window
- 131,072 tokens
- Knowledge cutoff
- August 31, 2024
- Input
- Text
- Output
- Text
- API pricing
- $1.00 in · $3.00 out / 1M tokens
Capabilities
Structured output