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Kardinal Review

Kardinal provides a route optimization API designed for developers, offering capabilities for real-world logistical challenges.

shipped Oct 1, 2026codefreemium
Domain rating36Monthly visits765/mo
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Kardinal — product screenshot

Why it matters

1Offers a free tier with 1,000 free stops for route optimization.
2Provides an API for integration into developer applications.
3Pricing includes a Prepaid Pack at €0.012 per address.
4Supports real-world constraints handling and delivery slot planning.

About Kardinal

Business Model
Usage-Based (Pay Per Use)
Usage Pricing
€0.012/address per address
Free Credits
1,000 free addresses
Platforms
API
Target Audience
Developers and logistical agencies

Pricing Plans

Free Tier
Free
  • • 1,000 free addresses
  • • No credit card required
  • • Test cases before payment
Prepaid Pack
€0.012/address
  • • Price decreases with volume
  • • No commitment
  • • Re-optimizations are free within a 24-hour window

Cost Examples

  • • Optimizing 1,000 addresses: €12

Specs

API Available

Yes, public API

overview

What is Kardinal?

Kardinal is an AI-powered route optimization tool that enables developers to address real-world logistical challenges. It provides an API for integrating route optimization capabilities into applications, supporting features like real-world constraints handling and delivery slot planning.

features

Key Features of Kardinal

Kardinal offers a suite of features designed to facilitate efficient route optimization for developers and logistical agencies. These capabilities are accessible via its API, ensuring integration into existing systems.

  • Real-world constraints handling for complex logistical scenarios.
  • Typed SDKs for simplified and robust API integration.
  • Instant account creation for immediate access to services.
  • Transparent pricing model with no long-term contracts.
  • Frequent updates and improvements to the platform.
  • API availability for programmatic access to route optimization.

use cases

Who Should Use Kardinal?

Kardinal is primarily designed for developers and logistical agencies seeking to integrate advanced route optimization into their applications and operations. Its API-first approach supports various use cases requiring efficient planning and execution.

  • Developers integrating route optimization into custom software solutions.
  • Logistical agencies optimizing delivery routes for fleets.
  • Businesses planning territory pavement and delivery slot allocations.

how to use

How to Use Kardinal

Kardinal provides an API for developers to integrate route optimization into their applications. Users can begin by creating an account and accessing the developer documentation.

  • 1Create an account on the Kardinal website.
  • 2Access the API documentation at https://developers.kardinal.ai/.
  • 3Utilize Typed SDKs for integration into development projects.
  • 4Send route optimization requests to the Kardinal API.
  • 5Manage usage and pricing through the user dashboard.

pricing

Kardinal Pricing & Plans

Kardinal operates on a freemium model, offering a free tier for initial use and a prepaid pack for scaled operations. The free tier includes 1,000 free stops, allowing users to optimize routes without upfront costs. Beyond the free tier, pricing is volume-based.

  • Free Tier: Free, includes 1,000 free stops.
  • Prepaid Pack: €0.012 per address for additional usage.

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Pros

  • +Offers a free tier with 1,000 free stops for initial use.
  • +Provides a dedicated API for developer integration.
  • +Supports real-world logistical constraints.
  • +Features Typed SDKs for streamlined development.
  • +Transparent pricing model with no contracts.

Cons

  • −Specific API rate limits beyond the free tier are not explicitly detailed.
  • −Requires development effort for API integration.
  • −Pricing is volume-based, which may scale differently for very high usage.

Policies

Pricing Page

View Pricing→

Similar Tools

Kardinal vs Competitors

Kardinal competes in the route optimization market against various solutions, each with distinct architectural and pricing models. Its hosted API approach differentiates it from self-hosted libraries and other API services.

1
Google OR-Tools↗

A comprehensive suite of open-source tools for optimization, including a powerful VRP solver, that developers integrate directly into their applications.

Unlike Kardinal's hosted API, OR-Tools is a library you run on your own infrastructure, offering full control and no per-request costs, but requiring more development effort for setup and maintenance.

2
GraphHopper Route Optimization API↗

Provides a robust route optimization API built on OpenStreetMap data, offering flexible VRP solving with features like time windows and capacities.

GraphHopper offers a similar hosted API experience to Kardinal, but its free tier might have different usage limits or feature sets, and its pricing model scales differently.

3
VROOM↗

An open-source C++ optimization engine specifically designed for solving Vehicle Routing Problems, offering a fast and efficient solution.

VROOM is a self-hosted, open-source engine that provides high performance for VRPs, requiring users to manage their own deployment and integration, unlike Kardinal's managed API service.

4
jsprit↗

An open-source Java toolkit for solving rich Vehicle Routing Problems, allowing developers to embed a VRP solver directly into their Java applications.

jsprit is a Java library for VRP, offering deep customization and control within a Java ecosystem, but it requires more direct integration and management compared to using Kardinal's hosted API.

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