Gemini 2.5 TTS: The Essentials of Expressive Audio

The era of robotic, monotone voiceovers is over. With the implementation of Gemini 2.5 Flash TTS and Gemini 2.5 Pro TTS on Scenario, your characters now have a soul. These models don't just read text; they perform it, capturing the subtle nuances of human emotion, cadence, and atmosphere.

1. Speed meets Soul: Flash vs. Pro

Scenario provides two distinct tiers of Google’s cutting-edge audio technology to fit your specific workflow:

• Gemini 2.5 Flash TTS: Built for speed and efficiency. It is the ideal choice for rapid prototyping, real-time dialogue systems, and high-volume asset generation where low latency is critical.

• Gemini 2.5 Pro TTS: The studio-standard for final production. The Pro model offers higher bit-rate fidelity and deep prosody analysis, making it the go-to for cinematic narrations, hero character lines, and long-form storytelling.

2. The Art of Expressive Prompting

The true power of Gemini 2.5 lies in its ability to follow Emotional Directives. By using bracketed tags, you can dictate the performance style directly within your text.

Mastering Performance Tags

Don't just write dialogue; direct it. Use these tag types to shape the voice:

• Tone Shifts: [thoughtful], [menacing], [playful], [resigned].

• Pacing & Cadence: [pause], [slow], [measured].

• Vocal Texture: [gravelly], [low], [quiet emphasis].

Pro-Tip: Use Multi-Stage Directives

Combine tags to create complex emotional journeys. For example:

• [playful][casual] Oh, come on! [pause] You’re taking this way too seriously. [laughing] Not everything has to be a life-or-death drama, you know? [teasing] Sometimes… it’s okay to just enjoy the moment.

3. Extensive Persona Library

Scenario provides a massive and growing collection of high-fidelity voices, primarily named after celestial bodies and mythological figures. While the interface shows dozens of options, the full library is designed to cover every possible character archetype.

• Male Personas: Choose from diverse tones like Achird, Alnilam, Charon, Fenrir, and the highly expressive Puck.

• Female Personas: Select voices like Aoede, Callirrhoe, Despina, Kore, or Pulcherrima for distinct vocal personalities.

• Endless Variety: The list continues far beyond the initial selection, ensuring you find the exact match for your character's age and presence.

4. Worldwide Linguistic Reach

Gemini 2.5 is a true polyglot, supporting an expansive list of global languages and regional dialects to ensure your project resonates anywhere in the world.

• Major Global Languages: Native-level support for English (US/India), Spanish (US), Portuguese (Brazil), French, German, and Italian.

• Asian & Middle Eastern Markets: High-fidelity output for Japanese, Korean, Arabic (Egyptian), Hindi, Bengali, and Indonesian.

• Regional Nuance: The platform includes specific regional variations, such as Marathi, Tamil, and Telugu, to capture cultural authenticity.

5. Technical Settings on Scenario

6. Give Your Projects a Voice

A visual is only half the story. Whether you need a [menacing][quiet] threat for a villain or a [soft][intimate] confession for a protagonist, Gemini 2.5 delivers the performance your project deserves.

Stop reading and start listening: Select your voice, paste your most expressive prompt, and hear your characters come to life in high-fidelity audio today.