As of early 2026, social media algorithms prioritise ‘engagement density’ – meaning how quickly a post captures attention and encourages interaction – over simple character counts. Current systems include advanced AI that analyses user behaviour to determine optimal post lengths *per platform* and even *per user segment*.
- Dynamic Length Optimisation: Platforms like Facebook, Instagram, and X now features AI-powered tools that suggest ideal post lengths based on real-time performance data.
- Video Shorts Dominate: TikTok-style short-form video (under 60 seconds) continues to outperform longer content, with algorithms favouring completion rates.
- LinkedIn’s Professional Focus: LinkedIn prioritises thought leadership; posts between 150-300 words, with clear takeaways, perform best.
In 2026, Australian businesses must also consider the ACCC’s ongoing scrutiny of algorithmic transparency. Platforms are increasingly required to disclose how content is ranked, impacting organic reach. Furthermore, Australian users respond well to authentic, locally-relevant content, meaning concise messaging that speaks directly to their needs is crucial. Simply hitting a ‘magic number’ of characters is no longer effective; personalisation and relevance are key.
Instead of navigating these complex algorithmic shifts and compliance requirements yourself, let ROI.com.au handle your social media strategy. We can take care of all this for you. Contact ROI Growth Agency today to discuss a tailored solution for your business.
