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.
> cohere's Command R+ is also available and while less capable, for instruction following, I believe its superior to Anthropic's models
My experience recently is that its actually noticeably better for instruction following than Claude, but can be finicky if you're not careful about adhering to the prompt template. But between the RAG and multi-step tool use capabilities, even if it was slightly worse on the instruction-following side of things I'd still say, as you do, thats its much better than Claude on average.
Agree on titan as well. I recently was forced into a meeting with our AWS TAM, and they kept shoehorning Q into every conversation. I held my tongue knowing that titan was the model powering it under the hood.
Also fun fact, Titan's image generator will refuse any prompt that references Bezos because it "violates content policy"
If you want to do something useful on bedrock use Claude