Two different things hide inside this question. One is formal expiry - does the certificate have an end date? The other is relevance decay - does the knowledge go stale? They have different answers, and the second matters more.
Formal expiry: sometimes yes
Some certifications, especially vendor ones tied to a specific platform version, carry an official expiry (often two to three years) and require renewal or re-certification to stay "active". Others - many university and foundational certificates - do not expire at all; once earned, they are yours. Check the specific programme; do not assume either way.
Relevance decay: always a risk
Here is the part people miss: even a certificate that never formally expires can become outdated in substance. AI moves fast. A certificate from a few years ago may reference tools and practices that have moved on. Employers know this, so a five-year-old AI certificate with no recent activity is a weaker signal than a current one backed by recent work.
Do you actually need to renew?
- Vendor certificate with an expiry → renew if you still work in that stack; let it lapse if you have moved on
- Non-expiring certificate → no formal renewal, but keep the skills current
- Either way → the real "renewal" is staying active: new projects, new tools, ongoing learning
Renewing a badge you no longer use is rarely worth it. Keeping your actual capability current always is.
Keep the credential alive
The best defence against a stale certificate is a living body of work. Keep applying AI, keep a short log of recent projects, and top up your knowledge as the field shifts. That way your effective credential is always current, whatever the date on the certificate says. A structured refresh like Understanding AI: What Leaders Need to Know can bring an older foundation back up to date.
The bottom line
Some AI certificates formally expire and some do not - but all of them can go stale as the field moves. Renew a vendor badge only if you still use that stack, and in every case keep your real skills current with ongoing work. That is the renewal that counts. Wondering whether to add more badges instead? See stacking multiple AI certifications.