Veo 3.1 Video ExtensionVeo 3.1 Video Extension is available in the Business API catalog.Google→Video Extensiongoogle/veo-3.1/video-extensionOpenAPICopy OpenAPI SchemaLLMUse with LLMPlaygroundAPIExamplesPricingHistoryMore on this modelAPIendpoint, parameters, responsesExamplesrepresentative generationsPricingrates for every tierHistoryyour recent runs