fix(model-prices): remove duplicate vertex_ai/gemini-embedding-2-preview entry

[Chesars]

Relevant issues

Fixes #23578

Pre-Submission checklist

• I have Added testing in the tests/test_litellm/ directory, Adding at least 1 test is a hard requirement - see details — N/A: JSON-only data change, no code logic affected
• 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

🐛 Bug Fix

Changes

The key "vertex_ai/gemini-embedding-2-preview" appeared twice in model_prices_and_context_window.json with different pricing values. In JSON, duplicate keys cause the second entry to silently overwrite the first, which led to the more complete multimodal pricing (audio, image, video) being lost.

Removed: The second entry (text-only, sourced from Gemini API docs)
Kept: The first entry with complete multimodal pricing sourced from Vertex AI pricing

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Project	Deployment	Actions	Updated (UTC)
litellm	Ready	Preview, Comment	Mar 14, 2026 3:37am

[greptile-apps]

Greptile Summary

This PR removes a duplicate "vertex_ai/gemini-embedding-2-preview" key from model_prices_and_context_window.json. Because JSON parsers silently let a later key overwrite an earlier one with the same name, the second entry was replacing the first, complete multimodal entry, causing audio/image/video pricing fields and the correct token rate to be lost at runtime.

Changes:

• Removes the second "vertex_ai/gemini-embedding-2-preview" entry (text-only pricing sourced from Gemini API docs)
• Keeps the first entry with complete multimodal pricing (input_cost_per_audio_per_second, input_cost_per_image, input_cost_per_video_per_second, supports_multimodal: true) sourced from Vertex AI pricing

Notes:

• The sibling entry "gemini-embedding-2-preview" (provider vertex_ai-embedding-models, line 14545) is missing supports_multimodal: true compared to the explicit vertex_ai/ and gemini/ prefixed entries — this is a pre-existing inconsistency outside the scope of this PR but may be worth a follow-up
• No code logic is changed; this is a data-only fix, making a dedicated test unnecessary

Confidence Score: 5/5

• This PR is safe to merge — it is a targeted, data-only removal of a duplicate JSON key with no code logic changes.
• The change is minimal (12 lines removed from a JSON file), clearly correct, and directly verified against the Vertex AI pricing source. No code paths are modified, no tests are required, and the kept entry is demonstrably more complete than the removed one.
• No files require special attention.

Important Files Changed

Filename	Overview
model_prices_and_context_window.json	Removes a duplicate vertex_ai/gemini-embedding-2-preview key that was silently overwriting the complete multimodal pricing entry. The kept entry (sourced from Vertex AI pricing, input_cost_per_token: 2e-07) includes audio/image/video unit costs and supports_multimodal: true; the removed entry lacked those pricing dimensions and referenced a lower token rate (1.5e-07) from the Gemini API docs.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[JSON Parse Start] --> B["1st occurrence of vertex_ai/gemini-embedding-2-preview\nFull multimodal pricing: audio, image, video, token\nsupports_multimodal: true\nSource: Vertex AI pricing"]
    B --> C["2nd occurrence of vertex_ai/gemini-embedding-2-preview\nText-only token pricing\nSource: Gemini API docs"]
    C -- "Silent overwrite - JSON duplicate key behaviour" --> D["BEFORE: Only 2nd entry survives\nMultimodal pricing lost"]

    E["After PR fix: single vertex_ai/gemini-embedding-2-preview entry\nFull multimodal pricing preserved"] --> F["Correct pricing returned to callers"]

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_{Last reviewed commit: 07d0129}