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- 1 third-party plugin skill per project
- Trial cloud services
- Personal, DIY & education use
- Updated every 6–12 months
ARC
PRO- Use on 2+ PCs simultaneously
- Unlimited robot skills
- Cloud backup & revision history
- Weekly features & bug fixes
- Business use permitted
ARC
RUNTIME- Load & run any ARC project
- Read-only mode
- Unlimited robot skills
- Includes early access fixes & features
- Minimum requirements: Windows 10 or higher, 2 GB RAM, 500 MB free disk space.
- Recommended: Windows 10 or higher, 8 GB RAM, 1 GB free disk space.
- Prices are in USD.
- ARC Free known issues: view here.
- More about each edition: Download & install guide.
- Latest changes: Release notes.
Compare Editions
| Feature |
ARC
FREE
|
ARC
PRO
|
|---|---|---|
| Get ARC Free | View Plans | |
| Usage | Personal · DIY · Education | Personal · DIY · Education · Business |
| Early access to new features & fixes | — | ✓ |
| 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 recognition phrases * | 10 | Unlimited |
| Camera devices * | 1 | Unlimited |
| Vision resolution | max 320×240 | Unlimited |
| Interface builder * | 2 | Unlimited |
| Cloud project size | — | 128 MB |
| Cloud project revision history | — | ✓ |
| Create Exosphere requests | — | 50 / month |
| Exosphere API access | — | Contact Us |
| Volume license discounts | — | Contact Us |
| Get ARC 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
ARC Pro is your passport to a world of endless possibilities in robot programming, waiting for you to explore.

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