The PostPost.ai blog

Brand-first social media: playbooks, teardowns and product notes.

Instagram Reel length limits in 2026: 3 minutes from the app, 15 minutes documented via the API, about 5 minutes in practice because of the 300 MB file cap.

How Long Can an Instagram Reel Be? App, API, and Scheduler Limits

A Reel can be 3 seconds at the shortest and 3 minutes at the longest if you post it from the Instagram app. If you post it through the API — which is what every scheduling tool does, including ours...

August 21, 2026 · 8 min read

A week of posts scheduled across Instagram, Facebook, LinkedIn, X, Threads and Telegram in PostPost.ai

Company

PostPost.ai is live. Here is why we built it.

Our own social media was eating most of a working day every week. ChatGPT did the fun 20 percent and left the rest. So we built the thing we wanted: an AI that learns your brand first, then makes the week.

August 19, 2026 · 6 min read