Should I upgrade my MacBook Air M3 to macOS Tahoe 26?

Tahoe is the new major version, it has all the new features, bells and whistles and interface design.

Sequoia 15.7 is just a security patch. You won't get any new features or options from it. Just the specific fix.

If you don't need Tahoe at this point, you may want to stay with Sequoia. You can always update to Tahoe later if you want to. It's not a permanent decision.

Trinity05 wrote:

Thanks for your reply. I've been through the link but as I'm not tech savvy, I still do not know which one to go for...

Tahoe is the latest, and has some new features.

OS - macOS Tahoe - Apple

On the other hand, because Tahoe is so new, there's a greater chance that you will run across compatibility issues with third-party applications. If you depend on third-party applications to help you make your living, you may want on Sequoia, at least for a little while, to see what experiences other users of those applications report.

Sequoia is still recent enough that it gets bug fixes and security updates from Apple, and can run current versions of Safari, Pages, Numbers, Keynote, GarageBand. Right now, it's probably about as safe as Tahoe, security wise – but, of course, if you stay on it, you can't play with new features like Liquid Glass.

The M3 MacBook Air was designed and built to the specifications of Apple

Apple designed and built macOS 26 Tahoe to specifically function at peek performance levels on the M3 Apple Silicon computer

Barring an Free Space issue or lack of free space, there should be little to worry about

It is usually suggested to have at least 15 % - 20 % of the Total Drive Capacity as Free space

ie 256 GB Drive Capacity @ 15 % = 38.4 GB Free , @ 512 GB Capacity @ 15 % = 76.8 GB Free

Other Software factor to consider

Unless Applications / Services that are Not Needed at ALL

Then tend to cause issues and should be removed

Third Party 2 Way Firewalls 

Commercial VPNs 

Third Party Security Software 

Third Party Disk Cleaners / Optimizer 

if it was me then I would look at OS - macOS Tahoe - Apple some do not care for the new look

but as operating systems evolved then many new features and the likes will only be available in their newest version

Trinity05 wrote:

Hi. I have a MacBook Air, M3 and currently on macOS Sequoia 15.6.1. I have a new upgrade but I have 2 choices: macOS Tahoe 26 or macOS Sequoia 15.7.

Which one should I go for?

IMHO, we can not and should not make that decision for you

We can say macOS 26.0 is newer that Sequoia 15.6.1

Though in each newer versions like Tahoe 26.0, the initial release

There are still some refinements / bugs that are still to be worked out with subsequent updates

Liquid Glass and the removal of Launchpad ( as many have discovered afterwards ) have been some major issues for some and not for others

You may what to read up on Tahoe and decide for yourself if it is a good fit

https://www.macrumors.com/roundup/macos-26/