No. I am referring to Claude 3.5 Sonnet New, released October 22, 2024, with model ID claude-3-5-sonnet-20241022, colloquially referred to as Claude 3.6 Sonnet because of Anthropic's confusing naming.

And it is a very good LLM. Some people complain they don't see an improvement with Sonnet 3.7

Also known as Claude 3.5 Sonnet V2 on AWS Bedrock and GCP Vertex AI

> colloquially referred to as Claude 3.6

Interesting. I've never heard this.

It's the reason Anthropic called their next release 3.7 Sonnet - the 3.6 version number was already being used by some in the community to refer to their 3.5v2.

Anthropic moved from 3.5, to 3.5(new), to 3.7. They skipped 3.6 because of usage in the community, and because 3.5(newer) probably passed some threshold of awfulness.

People also use 3.5.1 to refer to 3.5(new)/3.6.

The remaining difficulty now is when people refer to 3.5, without specifying (new) or (old). I find most unspecified references to 3.5 these days are actually to 3.6 / 3.5.1 / 3.5(new), which is confusing.

That's not correct. I have always referred to it as v3.6, and I've seen plenty of other people do so too. It's why their next model was called v3.7

The model formerly known as Claude 3.6 Sonnet?