Model comparison
Nous: Hermes 4 405B vs o3
Capability radar, value bars, and side-by-side posture.
Nous: Hermes 4 405B
Not scored
value score
o3
93
value score
Nous: Hermes 4 405B ctx
—
o3 ctx
200K
Capability radar
Value · context · multimodal · openness · speed posture
Value head-to-head
- o393
Attribute tape
| Field | Nous: Hermes 4 405B | o3 |
|---|---|---|
| Developer | Nous Research | OpenAI |
| Context | — | 200K |
| Modalities | Text, Code | |
| Openness | — | Proprietary Model |
| Speed | — | — |
| Price | — | $10/1M in · $40/1M out |
| Value score | — | 93 |
| Summary | Nous Research's flagship open-weight reasoning LLM built on the Llama 3.1 405B base, supporting hybrid direct-answer and chain-of-thought reasoning modes. Designed for complex tasks including math, code, STEM, structured output generation, and agentic workflows, with a user-steerable, low-refusal alignment posture. | OpenAI reasoning model focused on hard problems. |