I've been poking around this week and there's actually quite a few useful models on Bedrock (this is region dependent!) https://docs.aws.amazon.com/bedrock/latest/userguide/models-...

Claude Opus is supposedly only available in us-west-2, but is listed as "Unavailable" for me (Sonnet and Haiku are available). Cohere's Command R+ is also available and while less capable, for instruction following, I believe its superior to Anthropic's models. There's also Llama 3 70B Instruct and Mistral Large, both which are good for general tasks.

For those that haven't been closely following/testing the models available, I think Artificial Analysis' Quality vs Price charts isn't too bad a place to start https://artificialanalysis.ai/models although if you have specific tasks, it's best to eval some models are surprisingly good/bad at specific things.

Titan appears to be bad at everything though.