According to ElevenLabs (@elevenlabsio), Eleven v3 AI voice model demonstrates significantly improved performance and stability when provided with prompts longer than 250 characters. Shorter prompts are more likely to generate unstable or inconsistent audio outputs, which can impact the quality of AI-generated voice applications. This insight is crucial for businesses and developers leveraging ElevenLabs’ text-to-speech technology for content creation, voiceover automation, and customer service, as optimizing prompt length directly influences reliability and user experience (source: ElevenLabs Twitter, June 7, 2025).