Starting April 29, 2025, Gemini 1.5 Pro and Gemini 1.5 Flash models are not available in projects that have no prior usage of these models, including new projects. For details, see Model versions and lifecycle.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Interface StartChatParams (1.4.1)\n\nParams to initiate a multiturn chat with the model via startChat.\n\nPackage\n-------\n\n[@google-cloud/vertexai](../overview.html)\n\nProperties\n----------\n\n### apiEndpoint\n\n apiEndpoint?: string;\n\nOptional. The base Vertex AI endpoint to use for the request.\n\n### generationConfig\n\n generationConfig?: GenerationConfig;\n\nOptional. [GenerationConfig](/vertex-ai/generative-ai/docs/reference/nodejs/1.4.1/vertexai/generationconfig).\n\n### history\n\n history?: Content[];\n\nOptional. History of the chat session. [Content](/vertex-ai/generative-ai/docs/reference/nodejs/1.4.1/vertexai/content)\n\n### safetySettings\n\n safetySettings?: SafetySetting[];\n\nOptional. Array of [SafetySetting](/vertex-ai/generative-ai/docs/reference/nodejs/1.4.1/vertexai/safetysetting).\n\n### systemInstruction\n\n systemInstruction?: string | Content;\n\nOptional. The user provided system instructions for the model. Note: only text should be used in parts of [Content](/vertex-ai/generative-ai/docs/reference/nodejs/1.4.1/vertexai/content)\n\n### tools\n\n tools?: Tool[];\n\nOptional. Array of [Tool](../overview.html)."]]
