[prabhash-varma]

…rtex AI

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context.

• New model pricing
• Update existing pricing
• New model configuration
• Bug fix

Source Verification

https://cloud.google.com/model-garden/pricing?hl=en#gemini-4

Important

Please include a link to the official pricing page from the provider. Simple "I heard it from somewhere" or screenshot sources are not accepted.

Checklist

• I have validated the JSON using jq or an online validator
• I have verified that prices are in cents per token (not dollars)
• I have included the source link above
• I have signed the CLA (if first-time contributor)

Related Issue

Fixes # (issue)

[Copilot]

🔵 Needs a closer look

Carbon pricing and capabilities could not be verified against the official source, and billing correctness depends on downstream Google tier resolution and Vertex region/mode selection absent from this repository.

No open issues 🎉

What changed in this PR

Adds gemini-4-carbon to the repository’s model configuration and pricing catalogs for Google and Vertex AI.

Changes:

• Defines model capabilities, structured-output options, reasoning effort, and a 65,536-token output limit.
• Adds Google pricing entries for both context-length tiers, including token, cache-read, search, and batch rates.
• Adds Vertex AI pricing with global and default-region rates across standard, batch, flex, and priority modes.

File	Description
pricing/​vertex-ai.json	Adds base pricing and regional execution-mode rates.
pricing/​google.json	Adds pricing for the ≤128k and >128k context tiers.
general/​vertex-ai.json	Defines model parameters, capabilities, and excluded sampling parameters.
general/​google.json	Defines model parameters, capabilities, and Google-specific sampling exclusions.

_{Review effort: Balanced}