They certainly have internal research efforts underway, but I'm talking about what’s actually been released to end users via the Claude app or API. Their latest public Sonnet release 3.7 (feb 2025) felt pretty incremental compared to Sonnet 3.5 (june 2024), especially when you compare them to OpenAI and Google released models. In terms of the models you can integrate today, Anthropic hasn’t quite kept pace on either reasoning performance or cost efficiency.