A little startup I'm part of is on the AWS startup program giving us £10k in AWA credits so the more we can "proxy" through AWS the better.

We already heavily rely on anthropic models via Bedrock but I'll be interested to see if the tok/s throughout is better on this new service (or worse).

To be honest though after a quick skim, I'm unclear what other advantages this might offer over Bedrock where we can already access the models including vision etc. Will it be worth refactoring our services, all our terraform etc? Unclear at this stage, especially since Bedrock allows us to use more than just the anthropic models if needed

Are you sure those credits apply to this usage. Many forms of AWS credits dont cover usage of Claude models on Amazon Bedrock for instance, as all of them are billed as third party / marketplace consumption.