Add MoonshotAI provider with Kimi-K2 model support

[zachmayer]

This PR adds a new MoonshotAI provider for Kimi models.

Related PRs:

• feat: update OpenAI models - add o1-pro, o3-pro, o3-deep-research, computer-use #2234 - OpenAI model updates (o1-pro, o3-pro, etc.)
• Add grok-4 and groq kimi-k2 models #2235 - Grok-4 and Groq Kimi-K2 models

Changes

• Add MoonshotAIProvider with OpenAI-compatible API
• Implements OpenAI-style interface with custom base URL (api.moonshot.ai)
• Supports tool definitions but disables strict tool validation (as per MoonshotAI docs)
• Add moonshotai:kimi-k2-0711-preview as known model
• Configure to use OpenAIModel for compatibility
• Add comprehensive tests for provider functionality
• Update CLI and model name tests
• Uses MOONSHOT_API_KEY environment variable

The provider follows the same pattern as other OpenAI-compatible providers like DeepSeek and Grok.

As requested by @DouweM, I've split the original large PR into 3 focused PRs for easier review.

[zachmayer]

@DouweM @Kludex I think this is ready for review. I'd be happy to split it up into several PRs if you like (or squash the commits!)

[DouweM]

@zachmayer Thanks Zach! As you suggested, can you please split this up into separate PRs so the more straightforward ones can be merged more quickly? Pretty commit history is not that important, we'll end up squashing on merge anyway.

Also, from the MoonshotAIProvider, "Please note that the current version of Kimi API does not support the tool_choice=required parameter." makes me think we'll need a new field on OpenAIModelProfile to stop sending that value in this case and prevent errors. They suggest "you can emphasize the use of a certain tool in the prompt to achieve a similar effect" as a workaround, so I wonder if the default "The final response which ends this conversation" description of the output tool that we require to be called is already sufficient.

Maybe we can keep this PR for the MoonshotAIProvider as I already started talking about it :)

[zachmayer]

I made 2 PRs:

1. More OpenAI models
2. Moonshot on groq / grok-4 on grok

[DouweM]

@zachmayer Thank you! In addition to these comments, can you please add some docs?

[hyperlint-ai]

PR Change Summary

Added a new MoonshotAI provider to support Kimi-K2 models, enhancing compatibility with OpenAI's API.

• Introduced MoonshotAIProvider with OpenAI-compatible API
• Implemented support for Kimi-K2 model
• Added comprehensive tests for provider functionality
• Updated CLI and model name tests

Modified Files

• docs/models/openai.md

---

How can I customize these reviews?

Check out the Hyperlint AI Reviewer docs for more information on how to customize the review.

If you just want to ignore it on this PR, you can add the hyperlint-ignore label to the PR. Future changes won't trigger a Hyperlint review.

Note specifically for link checks, we only check the first 30 links in a file and we cache the results for several hours (for instance, if you just added a page, you might experience this). Our recommendation is to add hyperlint-ignore to the PR to ignore the link check for this PR.

[zachmayer]

I added a moonshot example to the open ai docs

[DouweM]

Can you look at the merge conflict as well please?

[zachmayer]

I'll make these updates and fix the conflicts.

[zachmayer]

@DouweM Ok, I think I covered all your feedback! let me know how it looks.

[zachmayer]

CI / test on 3.10 (pull_request) I think this error is unrelated to my PR, but I am not sure. it passes now that I synced main.

[zachmayer]

@DouweM I addressed that feedback— thank you! Any other rough edges or issues I should fix?

[DouweM]

@zachmayer Thanks Zach, looks great!

[zachmayer]

Awesome thank you again!