ARC 2024.06.22.00 (Pro & Runtime)

(Autonomous Robot Control Software)
Make robots with the easiest robot programming software. Experience user-friendly features that make any robot easy to program.

Change Release Notes

We're thrilled to announce an update for Synthiam ARC, including a few community-requested features, performance enhancements, and crucial fixes. Here's a closer look at what's new and improved:

New Features and Enhancements

  • Flexible Bing Speech Recognition: Now, you can enter Bing Speech Recognition languages as free text or choose from a dropdown menu. This means you're no longer limited to the predefined language options. Simply visit the Bing Speech Recognition website, obtain any speech language code, and add it directly. Microsoft frequently adds new languages, so you can always stay up-to-date without waiting for an ARC update.

  • New Commands in Python and JavaScript: We've added the popular sleepRandom() command from EZ-Script to both Python and JavaScript. This highly requested feature allows for more versatile and dynamic scripting in your projects.

  • Performance Improvements: Several performance improvements have been implemented that we identified during parallel ARCx development that we rolled into ARC.

Bug Fixes

  • Blockly Comment Character Fix: We fixed an issue where some comments in Blockly were using the wrong character. Now, your comments will be properly formatted, making your code clearer and easier to manage.

Get Building!

We hope you enjoy these updates and continue building amazing robots with Synthiam ARC. Your feedback drives our improvements, and we're excited to see what you'll create next!

Stay tuned for more updates and happy building!

ARC Downloads

ARC Free


  • Includes one free 3rd party plugin robot skill per project
  • Trial cloud services
  • Free with trial limitations

For schools, personal use & organizations. This edition is updated every 6-12 months.



Only $8.99/mo

  • 2 or more PCs simultaneously
  • Includes unlimited skills
  • Cloud backup
  • And much more

Experience the latest features and bug fixes weekly. A Pro subscription is required to use this edition.



  • Load and run any ARC project
  • Operates in read-only mode
  • Unlimited robot skills
  • Early access fixes & features

Have you finished programming your robot? Use this to run existing ARC projects for free*.

  • Minimum requirements are Windows 10 or higher with 2+gb ram and 500+MB free space.
  • Recommended requirements are Windows 10 or higher with 8+gb ram and 1000+MB free space.
  • ARC Free known-issues can be viewed by clicking here.
  • Get more information about each ARC edition by clicking here.
  • See what's new in the latest versions with Release notes.

Compare Editions

Feature ARC
  Get ARC for Free View Plans
Usage Personal
Early access to new features & fixes Yes
Simultaneous microcontroller connections* 1 255
Robot skills* 20 Unlimited
Skill Store plugins* 1 Unlimited
Cognitive services usage** 10/day 6,000/day
Auto-positions gait actions* 40 Unlimited
Speech recongition phrases* 10 Unlimited
Camera devices* 1 Unlimited
Vision resolution max 320x240 Unlimited
Interface builder* 2 Unlimited
Cloud project size 128 MB
Cloud project revision history Yes
Create Exosphere requests 50/month
Exosphere API access Contact Us
Volume license discounts Contact Us
  Get ARC for Free View Plans
* Per robot project
** 1,000 per cognitive type (vision recognition, speech recognition, face detection, sentiment, text recognition, emotion detection, azure text to speech)


Upgrade to ARC Pro

Experience the transformation – subscribe to Synthiam ARC Pro and watch your robot evolve into a marvel of innovation and intelligence.


Thanks for the continued support and fixing ARC even though ARCx is just around the corner. sleepRandom() is a useful addition.


Yes, thanks for the continued support and fixing ARC