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Build with SDD here, and see what others are building in the Specs Library.
Specathon.com challenge hero
This is an ongoing promotion for Free plan users - Claim a free Core plan month ($49 value). Ship something with Zencoder, show us the spec that guided it, and the plan is applied within 14 days of winner notification (we spotlight one winner per week).

What you get

A free month of the Core plan applied within 14 days of winner notification.

What you share

The spec you actually used plus a screenshot or video that shows the primary workflow you built—not just a login screen.

How we use it

Approved specs and screenshots will be featured inside our Specs Library so others can learn from your build.

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Who can participate

You must be on the Free plan to be eligible. Users on Core or higher plans cannot receive prizes.
  • You have a Zencoder Free plan account at time of submission and prize award.
  • You are 18+ years old (or meet your jurisdiction’s age of majority).
  • One prize per person — each participant may win only once during the lifetime of the Challenge.
  • Not available in regions listed on our Geographic Restrictions page.

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Submission checklist

  • ✅ Built with Zencoder agents or workflows (call out which ones).
  • ✅ Attach or link to the real spec document (any readable format).
  • ✅ Include a screenshot that shows the main experience in action.
  • ✅ Add a short note describing the feature, repo/environment, and beneficiary.

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Submit everything

Email your materials to specathon@zencoder.ai with the subject “Specathon.com Challenge Submission.” If anything is missing, we’ll follow up before judging.

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Terms & credit details

Review the full Specathon.com Challenge Terms for eligibility rules, the one-winner-per-week policy, and how credits are applied.