Portkey integration

[siddharthsambharia-portkey]

Cookbook Pull Request

Description

This PR adds the Portkey + Mistral AI Integration cookbook demonstrating how to:

• Implement production-grade AI Gateway features with Mistral models
• Set up semantic caching and advanced routing strategies
• Enable enterprise observability with custom metadata tracking
• Utilize virtual keys with budget/rate controls
• Manage prompts through the version-controlled library

Dependencies:

• portkey-ai Python package

Colab Compatibility:
✅ Notebook fully functional on Google Colab (Open Notebook)

Type of Change

What type of PR is it?

• New Cookbook
  • Notebook File
    • Does it work on google colab?
  • Markdown File
• Cookbook Update
• README.md Update
• Other

Cookbook Checklist:

• My code is easy to read and well structured
• I've tagged the versions of any dependency required
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings or errors

---

• My changes do not concern the cookbooks.

README.md Checklist

• I've added my cookbook to the table (via separate ecosystem README update)
• Documentation links validated