Nous: Hermes 4 405B
Reasoning. Your way.
Hybrid reasoning meets production speed
Toggleable Reasoning
Deep thinking on demand
Switch between instant responses and internal deliberation with think tags for complex problems.
Frontier Performance
Math, code, logic mastery
accuracy on reasoning benchmarks with 100% reliability across evaluations.
Massive Context
131K token window
Process long documents, codebases, and multi-turn conversations without truncation.
Examples
See what Nous: Hermes 4 405B can create
Copy any prompt below and try it yourself in the playground.
Mathematical Problem
“Solve this differential equation step-by-step: d²y/dx² + 4dy/dx + 3y = e^(-x). Show all work and reasoning.”
Code Optimization
“Review this Python function for performance bottlenecks and suggest optimizations with complexity analysis.”
Logic Puzzle
“Five people sit around a table. Given these constraints, determine who sits where and explain your reasoning.”
Technical Analysis
“Analyze this system architecture diagram and identify potential failure points and scalability issues.”
For Developers
A few lines of code.
Reasoning model. Three lines.
ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.
- Serverless: scales to zero, scales to millions
- Pay per token, no minimums
- Python and JavaScript SDKs, plus REST API
import requestsresponse = requests.post("https://modelslab.com/api/v7/llm/chat/completions",json={"key": "YOUR_API_KEY","prompt": "","model_id": ""})print(response.json())
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Start generating with Nous: Hermes 4 405B on ModelsLab.