Hermes 4 70B API
About
Build advanced reasoning agents with Hermes 4 70B, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.13/1M input and $0.40/1M output tokens, open weights architecture. Access Hermes 4 70B via the OpenRouter API with up to 118K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
No
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
131K
Tokens
Input Limit
131K
Tokens
Max Output
118K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.13
Output
$0.40
Frequently Asked Questions
Hermes 4 70B by OpenRouter costs $0.13 per 1M input tokens and $0.40 per 1M output tokens.
Model Details
ID
nousresearch/hermes-4-70b
Provider
OpenRouterFamily
hermes
Release Date
Aug 26, 2025
Knowledge Cutoff
Aug 31, 2024
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1