ElevenLabs Flash v2.5 is an ultra-low-latency text-to-speech model designed specifically for real-time conversational applications. It serves as an expansion of the Flash v2 model, extending support from English-only to 32 languages. The model is engineered to prioritize speed, achieving generation latencies of approximately 75 milliseconds.
While the model trades off some of the expressive depth found in ElevenLabs' Turbo or Multilingual v2 series, it maintains human-like intonation and timing. This makes it suitable for use cases where immediate response is critical, such as interactive AI agents, live-streaming, and customer service bots. The multilingual capabilities cover a wide range of global languages including major European, Asian, and Middle Eastern variants.
Flash v2.5 supports a character limit of up to 40,000 per request. It provides developers with fine-grained control over voice delivery through stability and similarity parameters. The model also includes specialized text normalization features, such as Speaker Boost, which improves the clarity and accuracy of reading numbers, dates, and measurements in English.