Prompt caching for anthropic models with openrouter

[konekohana]

Prompt caching for anthropic models with openrouter

Openrouter supports prompt caching for anthropic models as described here. This PR adds supports_prompt_caching and cache write/read prices for relevant models into both model price map files.

There isn't any code change in this PR, hence no added tests.

Relevant issues

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on make test-unit
• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🆕 New Feature

Changes

[vercel]

@konekohana is attempting to deploy a commit to the CLERKIEAI Team on Vercel.

A member of the Team first needs to authorize it.