The model IDs follow a fairly simple pattern, and they can be found using the /v1/models endpoint via the API.
Here is a list of the current models, and you can also find more information about each in their article here.
English v1 |
eleven_monolingual_v1 |
Multilingual v1 |
eleven_multilingual_v1 |
Multilingual v2 |
eleven_multilingual_v2 |
Turbo v2 |
eleven_turbo_v2 |
Turbo v2.5 |
eleven_turbo_v2_5 |