Lifespan of Social Media Posts in 2026: Every Platform Ranked

A Pinterest pin can still be earning half its engagement four months after you posted it. A post on X is usually done in under an hour. That gap is the single most useful thing to know before you decide where to spend your posting time. The clearest way to measure it is "half-life": the time it takes a post to collect half of the total engagement it will ever get. Researcher Scott M. Graffius has tracked this every year since 2018, most recently across more than 5.6 million posts and 397 podcasts from 2025 data, and his 2026 update gives a clean, sourced answer for nearly every major platform.

Key Takeaway: Pinterest (about 4 months) and blog posts (about 2 years) hold engagement the longest by far. YouTube and podcasts hold attention for days. Instagram and LinkedIn measure in hours. Facebook, Reddit, and especially X and TikTok burn through most of their engagement within minutes to a couple of hours.

What "Half-Life" Actually Means

Half-life isn't when a post stops getting any engagement. It's the point where it has already collected half of everything it's ever going to get. A post can keep trickling in likes and comments well past that point, but the half-life marks where the bulk of its impact has already happened. It's a more honest number than "how long does a post last," because posts on most platforms technically stay visible forever; what actually changes is how much anyone is still looking at them.

2026 Half-Life by Platform

Two platforms sit at effectively zero on this metric: TikTok and Snapchat. That doesn't mean posts vanish, it means the data shows engagement concentrating almost immediately, with viral or algorithmically boosted content as the exception rather than the rule.

Why the Numbers Moved Since 2023

The original version of this post used older, platform-by-platform estimates from scattered sources. The 2026 figures above come from one consistent, annually repeated methodology, which makes the year-over-year trend more meaningful than the raw numbers alone. A few patterns worth calling out:

X's half-life has grown for three straight years, from 43 minutes in the 2024 edition to 52 minutes in 2026, even though it's still one of the shortest windows measured. Instagram and LinkedIn have moved the opposite direction, both shrinking year over year, which tracks with heavier competition for attention and a stronger push toward Reels and short-form video on both platforms. YouTube, by contrast, has lengthened every year measured, from 8.83 days in 2024 to 10.6 days in 2026.

What This Means for Where You Spend Your Time

If a platform's half-life is measured in minutes, posting frequency matters more than post polish. You're not competing for attention over days, you're competing for a narrow window, so consistency and timing carry more weight than production value. That's the case for X, Snapchat, TikTok, and to a lesser extent Facebook and Reddit.

If a platform's half-life is measured in days or months, the opposite is true. A single well-made Pinterest pin, YouTube video, or blog post keeps earning traffic long after you've moved on to the next piece of content. That's the argument for spending more editing and SEO effort per piece on those platforms, and it's also why building your content mix around evergreen posts remains one of the highest-leverage things a publisher can do.

Pro Tip: Match your repost and refresh schedule to each platform's half-life. Recycling a Facebook post after a day or two makes sense; recycling a Pinterest pin after a day does not, since it's still climbing toward peak engagement for months.

Platforms Not Covered in the 2026 Data

The original 2023 version of this article included Tumblr, Quora, and Flipboard. Those platforms aren't part of Graffius's 2026 dataset, and we didn't find a comparably rigorous, current half-life figure for any of them, so rather than carry over old estimates we can't verify, we're leaving them out of the table above. In general terms: Quora answers and Flipboard-curated articles still behave as long-tail, search-driven content that can resurface for years, closer in spirit to blog posts than to feed-based platforms, but treat that as a general pattern rather than a measured figure.

The Big Picture

Line up the 2026 numbers and a clear split appears. Pinterest and blogs operate on a completely different timescale from everything else, measured in months and years rather than minutes and hours. YouTube and podcasts sit in a middle tier, with attention spread out over a week or two. Everything else, from LinkedIn down to TikTok, is a feed-speed platform where yesterday's post is already old news.

None of this changes what you should post, but it should change how often you post it, and how much you expect any single post to keep working for you after the first day.

Sourcing note: last checked September 30, 2026. Half-life figures for Snapchat, TikTok, X, Facebook, Reddit, Instagram, LinkedIn, podcasts, YouTube, Pinterest, and blogs come from Scott M. Graffius's "Lifespan (Half-Life) of Social Media Posts: Update for 2026," based on an analysis of over 5.6 million posts and 397 podcasts from January to December 2025. This research replaces the mixed, unattributed estimates used in the original 2023 version of this article. Tumblr, Quora, and Flipboard are not part of the current dataset and have been removed rather than left with unverified older figures.

Hardeep Singh

Hardeep Singh is the founder and editor of Panstag, an independent technology publication covering AI, Google, software, creator tools, blogging, SEO, and digital publishing. He researches technology updates, tests products and features where practical, and uses primary sources to help readers understand what changed and what to do next. About Author.