Cartesia

Create a Cartesia account, obtain an API key, and begin with the official quickstart for the current speech model. Generate short speech samples first to choose an appropriate voice and confirm pronunciation behavior. For conversational applications, use streaming where supported and measure end-to-end latency rather than only model generation time. Keep credentials server-side, cache reusable audio when appropriate, and implement retries and timeouts around network calls. Test names, numbers, abbreviations, and domain-specific terminology that your production users are likely to say or hear.

For a first evaluation, keep the scope small enough that you can compare the AI-assisted result with a known baseline. Record the configuration, model or workflow choices that produced the result so successful tests can be reproduced. If the product connects to external systems or private data, grant the minimum permissions required and review the provider's current security and data-handling documentation before expanding access.