Sonnet 4.5

[parthrock53]

How to add sonnet 4.5 model ?

[chesha1]

You could use new modelid claude-sonnet-4-5-20250929-think, with format no changes like old modelid claude-opus-4-1-20250805-think

[tl0rty2q]

any new model id ? thanks @chesha1

[chesha1]

@XuJun05 What do you mean by “any new model id”? There haven’t been any new models since Sonnet 4.5. If you’d like to see the available models, you can check this page: https://docs.claude.com/en/docs/about-claude/models/overview#latest-models-comparison and look at the Claude API ID row. If you want to enable extended thinking, add -think to the model ID.