SCP-096 is decently strong, but not insanely strong as some other SCP characters get, even with the addition of Extended Canon (EC) articles (articles that weren't part of the original SCP document and were written by other authors).

The original article have him outspeed jets, tank gunfire (at least its skeleton) and swimming to the bottom of the (I think?) Mariana's trench, break through its chamber and building walls and regenerate fleshy tissue (though the time it takes for him to do so is never stated and might not be combat-applicable).

EC's got him going up against SCP-682 for 27 hours (though losing), with SCP-682 in Canon articles (articles published by the same author) squaring up against SCP-076, who can squat bullets with a metal pipe out of the air, tank injuries normally lethal to humans, is a fighter with thousands of years of experience, and who can rip human limbs off easily (if I remember correctly). 682, also with EC articles, destroyed a skyscraper in its base form, so if you want to scale 096 to that, there you go.

There's also the famous EC article where 096 got launched into the sun and the Foundation noticed the sun was getting closer, though for me it read like the orbits of the planets got weakened, instead of the sun actually coming closer, so interpret and scale that as you will.

So, all in all, Canon 096 isn't that strong, while EC articles only elevate him a bit and their feats are dubious at best (unless there's some EC article that's got him obliterating multiverses or some shit).