Add support for cohere-embed v3.0

[ojpetar]

The new cohere embed models have an additional mandatory parameter that needs to get passed when creating embeddings - would be awesome to get langchain support for this!

New embed endpoint docs + docs on additional parameters: https://txt.cohere.com/introducing-embed-v3/

[dosubot]

🤖

Hello @ojpetar,

I'm Dosu, a friendly bot here to assist you while we wait for a human maintainer. I can help you solve bugs, answer questions, and guide you on becoming a contributor. I'm here to make your experience with the langchainjs repository as smooth as possible. Let's work together!

Best,
Dosu

It seems like you've got this under control, if you want help or have specific questions, let me know what I can do for you!

[bracesproul]

Hey @ojpetar it looks like cohere's typescript SDK does not currently support it, however there is a PR up in their repo with an implementation. Once that PR is merged we'll add support here!

[squamos]

@bracesproul can you link to the open issue in cohere's typesccript sdk to follow? having the same issue

[bracesproul]

@bracesproul can you link to the open issue in cohere's typesccript sdk to follow? having the same issue

There isn't an open issue however this is the PR which added support in their repo

[squamos]

Thanks @bracesproul - how often do you publish npm version updates? Looking forward to trying this out!

[bracesproul]

Thanks @bracesproul - how often do you publish npm version updates? Looking forward to trying this out!

We'll publish one tonight! Normally we do it at the end of business hours PST (ish).