Back when I started rebuilding in early-2020, Capital One's offer for an unsecured Platinum MasterCard was my 1st - they gave me a $300 credit line. This has slowly grown over the years (for example raising to $500 after several on-time payments), though I admittedly haven't been using it as much as I used to. It sat at $1,500 for maybe around 2 years?
A few weeks ago, they upped to $4,000! I never thought it would lap my Quicksilver ($3,500 for probably longer) - yet here we are. 
If you're wondering why I haven't taken the advice of some forum members and axed this card a while ago, now you know... Again, show me a wallet full of high-end travel or other rewards cards with 5+ figure limits on auto-credit-limit-increase and ask me how I feel then? It's like most people on here (who have been through far worse) can do it drunk, standing on their head!
congrats!!
have you tried seeing if there was an offer to product change it to another Quicksilver or Savor One?
https://verified.capitalone.com/auth/signin?Product=Card&Action=ProductUpgrade
you can also add /productupgrade to the end of your link on desktop
or you can try to see if there's one in: I want to -- products and upgrades
Pretty cool, Congrats on your CLI !
NFCU Visa 43k | NFCU Platinum 37k | Cap1 QS 14.5K | Cap1 QS 12.5K | Barclay MC 25k | Delta Gold Amex 40K | Discover IT 22K | CFNA FS 3600 | CareCredit 20k| PayPal Credit 10k |
Congrats
Cap1 is a great bank to build things up with! Congrats on your awesome increase on that plat! Definitely follow that great advice about the PC/upgrade link. You can PC a card with them every 181 days if the system lets you! Enjoy your new CL!
