Hermes 4 70B from Nous Research is a hybrid reasoning model with <think> traces, 131K context, JSON schema adherence, tool use, and reduced refusals.
Capabilities, design details, and architectural traits
Hermes 4 70B is a frontier, hybrid-mode reasoning model from Nous Research based on Llama-3.1-70B. It is positioned around deliberate reasoning, structured outputs, and developer-controlled interaction patterns.
| Aspect | Official Characteristic |
|---|---|
| Reasoning mode | Can generate explicit <think>...</think> deliberation traces before answering. |
| Interaction control | Reasoning behavior can be enabled with thinking=True or the reasoning.enabled boolean. |
| Context strategy | Supports a 131,072-token context window. |
| Structured output | Trained to produce valid JSON for schemas and repair malformed objects. |
| Tool use | Supports function/tool calls within a single assistant turn. |
| Alignment profile | Described as easier to steer, with reduced refusal rates and broadly neutral alignment. |
Independent evaluations · Artificial Analysis
Evaluate specifications, pricing, and independent benchmark indices
| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | Nous Research | Anthropic | Anthropic |
| Release Date | August 27, 2025 | July 24, 2026 | June 9, 2026 |
| Knowledge Cutoff | Aug 2024 | May 2026 | - |
| Context & Limits | |||
| Context Window | 131K | 1M Best Context Window | 1M Best Context Window |
| Pricing (per 1M tokens) | |||
| Input Pricing | $0.13 Best Input Pricing | $5 | $10 |
| Output Pricing | $0.40 Best Output Pricing | $25 | $50 |
| Modalities | |||
| Inputs | text | textimage | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 6.7 | 63.1 Best Intelligence Index | 62.1 |
| Coding Index | - | 78.0 Best Coding Index | 76.5 |
| Agentic Index | - | 59.2 Best Agentic Index | 56.6 |
Graduate-level reasoning and expert Q&A evaluation.
Extremely difficult logical reasoning and knowledge.
Logical reasoning over long context windows.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
