A product team uses the Converse API to reduce custom integrations across foundation models. Which assumption must still be validated for each selected model?

1. Supported features and model-specific capabilities such as tools, modalities, and inference parameters.
2. Every model automatically supports every tool and image format through the common API.
3. All model outputs become deterministic and factual when using Converse.
4. The common API removes all model access and regional availability requirements.