VertexAI: Gemini 3 or 2.5 Pro or Flash , do they have input tokens limit?

[XinyueZ]

I don't know when it started, it should have been fine last week. Today, the same project, nothing has changed, and it suddenly started throwing errors.

{'error': {'code': 400, 'message': 'The input token count (25270) exceeds the maximum number of tokens allowed (4000).', 'status': 'INVALID_ARGUMENT'}}

I worked with the RAG Engine and Document AI. The 2.5 stuffs function normally.

[XinyueZ]

Gemini 2.5 is currently experiencing the same issue, and we use EU West 1 or 2，4 in Vertex AI.