Request: Add Stability AI Image Generation Integration

Hi LangChain team,

I wanted to suggest adding Stability AI image generation support in LangChain.js, similar to how OpenAI or Replicate are integrated. Stability AI offers free API access, which makes it really beginner-friendly and also lowers the barrier for developers experimenting with AI-powered applications.

Having native support for Stability AI in LangChain.js would:

  • Give devs an additional option beyond OpenAI/Replicate.

  • Enable free prototyping and testing before scaling.

  • Broaden LangChain.js’ support for multimodal workflows.

It would be great to see Stability AI integrated as a standard image generation provider in the ecosystem.

Also, I’d love to contribute to this integration if possible — would be glad if someone from the team/community could guide me on where to start :slightly_smiling_face:

Thanks!