Gemini API Release Notes

• Launched Gemini 3.1 Flash TTS Preview, our cost-efficient, expressive, and steerable text to speech model. Read the Text-to-Speech docs to learn more.

• Released gemini-robotics-er-1.6-preview, our updated robotics model. It now has new capabilities like instrument reading, improved spatial and physical reasoning capabilities. To learn more, see Gemini Robotics-ER page and the blog.

• Deprecation announcement: The gemini-robotics-er-1.5-preview model will be shut down on April 30, 2026 at 9AM PST.

• Released gemma-4-26b-a4b-it and gemma-4-31b-it, available on AI Studio and through the Gemini API, as part of the Gemma 4 launch.

• Introduced the new Flex and Priority inference tiers, offering more options for optimizing for costs or latency.

• Launched Veo 3.1 Lite Preview, veo-3.1-lite-generate-preview, our most cost-efficient video generation model, designed for rapid iteration and building high-volume applications.

• The gemini-2.5-flash-lite-preview-09-2025 model has been shut down. Use gemini-3.1-flash-lite-preview instead.

• Released gemini-3.1-flash-live-preview, the latest audio-to-audio (A2A) model designed for real-time dialogue and voice-first AI applications. Read the Live API docs to get started.

• Launched Lyria 3 music generation models: lyria-3-clip-preview (30-second clips) and lyria-3-pro-preview (full-length songs). Both models accept text and image inputs and generate high-quality, 48kHz stereo audio. See the Music generation guide for details and code samples.

• Rolled out Prepay and Postpay billing plans in AI Studio. Existing accounts may be affected; read the Billing documentation for more information.

• Updated OpenAI compatibility feature to support gemini-3-pro-image-preview and the /v1/videos endpoint with our veo-3.1-generate-preview model.

• Released the new Built-in Tools and Function Calling Combination feature, making it possible to use Gemini's built-in tools alongside custom function calling tools in a single API call.

• Grounding with Google Maps is now supported for Gemini 3 models going forward.

• Introduced revamped Usage Tiers and Billing Account spend caps for a better user billing experience.

• Introduced
  project-level spend caps
  to billing in AI Studio.

Release notes

• Released gemini-embedding-2-preview, our first multimodal embedding model. It supports text, image, video, audio, and PDF inputs, mapping all modalities into a unified embedding space. To learn more, see Embeddings.

• Deprecation announcement: The gemini-2.5-flash-lite-preview-09-2025 model will be shut down on March 31, 2026.

Release notes

• The Gemini 3 Pro Preview model has been shut down. The gemini-3-pro-preview now points to gemini-3.1-pro-preview.

• Launched Gemini 3.1 Flash-Lite Preview, the first Flash-Lite model in the Gemini 3 series. Read the model page for specs, specific updates, and developer guidance.