ChatGPT and Gemini are supported in web research (Claygent), but they have specific requirements. For ChatGPT, you need Tier 2 or higher (≥450,000 TPM). For Gemini, you need Tier 2 but it only works with the Gemini 2.0 Flash model - Gemini 1.5 models may require additional access through Vertex AI. [1]