Short answer: yes, but it’s not guaranteed to be seamless.
ElevenLabs’ multilingual models can detect mixed‑language text and speak multiple languages within a single prompt, so a single cloned voice can read bilingual sentences. For best results, though, ElevenLabs recommends using one language per prompt. (elevenlabs.io)
On the website, language is auto‑detected; mixing languages in one prompt can confuse detection. Via API you can lock a prompt to a language with the language_code parameter. (help.elevenlabs.io)
Any cloned voice can speak supported languages, but accent/pronunciation come from the voice itself. If your clone was recorded in English, Spanish parts may carry an English accent or drift. (help.elevenlabs.io)
Bottom line: bilingual code‑switching often works, but for the most reliable output ElevenLabs advises single‑language prompts (or explicitly setting the language via API). (help.elevenlabs.io)
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