I've worked with (and paid invoices from) several top-tier international > 500 attorney firms and if that's what you're effectively paying for junior associate time you need to look elsewhere.
For rate sheet time that's still too much and negotiating down legal invoices is just about the best use of time from a cost-benefit standpoint.
On one engagement, for example, the firm and project I was working with/on was doing high stakes IP work for a FAANG. Every attorney I've worked with graduated from a top 15 law school (majority being top 10). If that's not top-tier then I'll concede I don't know what is.
We started talking about the quality and pricing of a ChatGPT bot and ended up here... Point is, given the pricing of Detangle ($10/page) you could hire an attorney down the street with any amount of experience in contract law to review an agreement with better results at equivalent (or cheaper) pricing. At the current state of ChatGPT a paralegal or some random cousin in law school would be better.
I totally agree, I'm just pointing out that at $400/hr that's a huge discount on a "top tier" firm. I'm not at a biglaw firm and I'm an associate and my time is 50% more than that and I don't work for faangs!
For rate sheet time that's still too much and negotiating down legal invoices is just about the best use of time from a cost-benefit standpoint.