Gemini 3.1 Flash TTS: Multi-Speaker Dialogue and Expressive Voice Control
Google AI shipped several technical releases this week. Gemini 3.1 Flash TTS is a new text-to-speech model with native multi-speaker dialogue support, improved controllability, and audio tags for natural expressive voices across 70+ languages. Gemini Robotics-ER 1.6 is an upgraded embodied reasoning model designed to help robots reason about physical environments. Additionally, Google AI Studio received Design previews and a 'tab tab tab' functionality for improved developer workflows.
Gemini 3.1 Flash TTS: Multi-Speaker Dialogue and Expressive Voice Control
Google shipped Gemini 3.1 Flash TTS, a text-to-speech model supporting native multi-speaker dialogue, audio tags for prosody control, and 70+ languages. The release also includes Gemini Robotics-ER 1.6 for embodied reasoning and updates to Google AI Studio and Chrome. Full technical specifications remain limited.
Integration Strategy
When to Use This?
Strong fit:
- Conversational AI applications requiring natural dialogue turns
- Multi-character game or animation voice pipelines
- Accessibility tools needing expressive, controlled speech
- Localization workflows requiring consistent multi-speaker output across languages
Gemini Robotics-ER 1.6 applicability:
- Research into household or industrial robot reasoning
- Simulation-to-reality transfer pipelines
- Embodied AI experiments (requires direct inquiry with Google DeepMind)
How to Integrate?
Gemini 3.1 Flash TTS — Access via Google AI Studio, which received "Design previews" functionality this week. The 'tab tab tab' workflow feature may streamline iteration. SDK availability and API endpoint details require verification in AI Studio documentation.
Gemini Robotics-ER 1.6 — Likely requires engagement through Google DeepMind's research partnerships orVertex AI Robotics (unconfirmed pathway).
Compatibility
| Component | Status |
|---|---|
| Google AI Studio | Primary access point confirmed |
| Vertex AI | Not confirmed |
| Python SDK | Not confirmed |
| REST API | Not confirmed |
| Chrome Extension | Separate Skills feature announced |
Source: @GeminiApp Reference: Original announcement thread Published: Week of April 2026 DevRadar Analysis Date: 2026-04-22