Hermes 4

Hermes 4

Nous Research
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+

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About

Hermes 4 is the latest evolution in Nous Research’s line of neutrally aligned, steerable foundational models, featuring novel hybrid reasoners that can dynamically shift between expressive, creative responses and efficient, standard replies based on user prompts. The model is designed to respond to system and user instructions, rather than adhering to any corporate ethics framework, producing interactions that feel more humanistic, less lecturing or sycophantic, and encouraging roleplay and creativity. By incorporating a special tag in prompts, users can trigger deeper, internally token-intensive reasoning when tackling complex problems, while retaining prompt efficiency when such depth isn't required. Trained on a dataset 50 times larger than that of Hermes 3, much of which was synthetically generated using Atropos, Hermes 4 shows significant performance improvements.

About

Trajectory is the platform for continual learning, built to turn real product usage into AI that continuously improves. It helps every product become a living system by treating every edit, retry, correction, re-prompt, and user acceptance as a signal. User behavior reflects real task success more accurately than any benchmark, and Trajectory gives teams a creative surface to observe, direct, and craft the intelligence behind their product. With a lightweight SDK, teams can plug Trajectory into an AI product and start capturing the signals users are already generating, including traces, corrections, re-prompts, and edits. It helps teams understand what the model is learning, steer it toward what matters, and deploy updates with confidence. It is designed for domains where model behavior shifts meaningfully from one setting to the next, making steerability a core operational requirement rather than just a research interest.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Advanced users and AI developers in need of a tool to balance deep inference capabilities with customizable, context-aware conversational workflows

Audience

AI product teams that need to capture real user feedback, improve model behavior over time, and safely deploy continually learning systems

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Nous Research
Founded: 2023
United States
hermes4.nousresearch.com

Company Information

Trajectory
United States
trajectory.ai/

Alternatives

Hermes 3

Hermes 3

Nous Research

Alternatives

Claude Sonnet 4

Claude Sonnet 4

Anthropic
Cognita

Cognita

Trajectory
Hermes Agent

Hermes Agent

Nous Research
MaxHermes

MaxHermes

MiniMax
nxtAERO

nxtAERO

Intelligent Automation

Categories

Categories

Integrations

Clay
Decagon
Harvey AI
Nebius Token Factory
Rogo

Integrations

Clay
Decagon
Harvey AI
Nebius Token Factory
Rogo
Claim Hermes 4 and update features and information
Claim Hermes 4 and update features and information
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