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SPECIFICTION
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AI Rule Engine vs FlexRule Open

AI Rule Engine

ruleengine.ai

FlexRule Open

flexrule.com

Side by side

FigureAI Rule EngineFlexRule Open
Price from$49/mo—
Free planYes—
Free trial——
Open source——
WebYesYes
Windows—Yes
macOS—Yes
Linux—Yes
APIYesYes
Self-hostedYesYes
Plans published51
Spec score · Business Rules Management Software8.5 (#3)7.6 (#11)
IntegrationsThe product supports outbound HTTP API actions, marketplace extensions, durable storage actions, and API access for external systems.Data connectors include MS SQL Server, Oracle, PostgreSQL, MySQL, MS Access, NoSQL databases, generic REST APIs, Gmail, Twitter, LinkedIn, Google Calendar, Salesforce and Dynamics 365.
PurposeAI Rule Engine automates policy-governed operational decisions such as claims triage, eligibility, prior authorization, and underwriting referral, recording why each decision was made.FlexRule Open is an open platform where data, business intelligence, rules and AI work together for adaptive enterprise decision intelligence in regulated environments.
SupportEnterprise includes live onboarding and support, while Premium Support is a paid add-on offering business-hours coverage and stated P1 and P2 response targets.Technical or business questions can be submitted through the support portal, and emailing [email protected] automatically creates a support ticket.

Plans

AI Rule Engine

  • FreeFree
  • Pro$49 a month
  • Team$199 a month
  • Enterprise$999 a month
  • CustomPriced on request

AI Rule Engine pricing →

FlexRule Open

  • FlexRule OpenPriced on request

FlexRule Open pricing →

In their own words

AI Rule Engine

AI Rule Engine automates operational decisions governed by customer-authored policies, including claims triage, eligibility, prior authorization, and underwriting referral. Customer rules determine outcomes; AI can classify, extract, or summarize unstructured material into facts used by those rules. Run traces show which rules fired, their order, matched values, and changes to decision context. Static verification can flag rules that cannot fire, duplicates, conflicting writes, and input combinations without a matching rule; saved tests can gate releases. The product supports outbound HTTP actions, marketplace extensions, durable storage actions, and external API access. Native model options include Anthropic Claude, OpenAI ChatGPT, Azure OpenAI, Google Gemini, and xAI Grok, using customer-provided keys. All plans include an MCP server for configured assistants to trigger workflows and access permitted files and logs. Free, Pro, Team, and Enterprise support shared hosting; Enterprise can use up to three dedicated Azure hosts. Free is free, Pro $49 a month, Team $199 a month, and Enterprise $999 a month. The maker notes it has no SOC 2 attestation, DPA or BAA, or independent third-party penetration test.

Visit ruleengine.ai

FlexRule Open

FlexRule Open combines data, business intelligence, rules and AI for enterprise decision intelligence in regulated environments. It supports Decision Model and Notation at Conformance Level 3 and Shared Data Model and Notation, and uses DecisionLang for declarative decision modeling and execution across multiple runtimes. The Open SDK lets technical teams extend DecisionLang with features, custom visuals and integration points without source-code access. Deployment can be in the cloud, on premises or at the edge, including embedded, browser, client and REST API service execution. Its RESTful API exposes configuration, permissions, security, deployment and decision execution. The authoring platform provides step-through debugging, breakpoints, execution-context inspection and no-code testing for rules, decisions, machine learning and other models. Users can manage and compare versions of artifacts, models and online services, and inspect change history. Connectors include databases, REST APIs, Gmail, Salesforce and Dynamics 365. Pricing is on request.

Visit flexrule.com