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features
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Description

Antaeus serves as a semantic policy engine designed for developers tasked with assessing human-written rules related to language, context, intent, or exceptions. It features an open-source core built in Go and a command-line interface that can load policy artifacts in YAML or JSON formats, validating these against versioned schemas while executing named regression tests. The evaluation process yields clear outcomes such as allow, review, deny, or failure, accompanied by policy identification and evidence for the decisions made, while leaving the responsibilities of authentication, authorization, and any consequential actions to the application itself. Developers have the option to operate a deterministic, credential-free local workflow or utilize an experimental hosted dashboard and API for managing policies and evaluating various inputs. Additionally, there is an experimental OpenAI evaluator available for use. It is important to note that Antaeus is still in its early stages; thus, the capacity of the hosted service is limited and does not come with a production-level service level agreement (SLA), which may affect reliability during high-demand situations.

Description

The Decisions API is designed to transform both text and images into structured decisions that applications can utilize, processing inputs approximately ten times faster than the Responses API. Developers must provide a model along with shared input evidence and one or more questions that outline the evaluation criteria, after which the API delivers organized answers suitable for tasks like content classification, request routing, work prioritization, or making decisions based on defined thresholds. It accommodates three types of questions: predicate, which assesses whether a condition holds true and yields a probability ranging from 0 to 1; choice, which chooses a single value from a predetermined set and provides the associated probabilities and confidence levels; and score, which measures an input against a set of ordered rubric levels to return a probability-weighted score. The system is versatile in that it can process inputs as plain text or as user messages that include both text and images, making it effective for evaluating various scenarios such as identifying visible product damage, determining request intent, classifying document types, assessing issue severity, or evaluating answer relevance. This capability empowers developers to create more responsive and intelligent applications tailored to user needs.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

No images available

Screenshots View All

Integrations

OpenAI Yes 
GPT-6 Luna No 

Integrations

OpenAI Yes 
GPT-6 Luna Yes 

Pricing Details

Free
The local Go engine is available under the Apache-2.0 license at no charge. Hosted usage includes a shared free allowance of up to 100 completed decisions per day, subject to shared capacity and without a production SLA. Paid usage is available through credit purchases starting at $10; hosted evaluation charges are usage-based.
Free Trial No 
Free Version Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises Yes 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac Yes 
Linux Yes 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Antaeus

Website

antaeus.io

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

developers.openai.com/api/docs/guides/decisions

Product Features

Business Rules Management Systems (BRMS)

Access Control / Permissions No 
Code Development Environment No 
Deploy Across Platforms No 
Flexible Hosting Options No 
Lifecycle Management No 
No Code Development No 
Simulation No 
Validation Tools No 

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