API Release Notes

Gemini Nano Banana 2.1 (gemini-nano-banana-2.1) is generally available with improved visual quality, prompt adherence, multi-turn character consistency, text rendering, and wide and panoramic aspect ratios up to 8:1 across 1K, 2K, and 4K resolutions. The gemini-3.1-flash-image model is deprecated with no shutdown date announced.

Gemini Nano Banana 2.1 is now generally available, and gemini-3.1-flash-image is deprecated.

Gemini 3.8 Flash TTS (gemini-3.8-flash-tts) and the faster, cheaper Gemini 3.8 Flash-Lite TTS (gemini-3.8-flash-lite-tts) are generally available alongside the Gemini API Voices endpoint at /v1beta/voices. Voice design, consent-verified voice replication, and an extended library of 150+ prebuilt and custom voices are included, with Flash-Lite TTS positioned to replace gemini-3.1-flash-tts-preview.

Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS are generally available, alongside the Gemini API Voices endpoint at /v1beta/voices. Flash-Lite TTS replaces gemini-3.1-flash-tts-preview for high-throughput production and real-time voice agent cascades, and voice design, voice replication with consent verification, and a 150+ voice library are now offered.

Access to Gemini 2.5 models is being limited to users who have actively used them in the past; the models are not deprecated and will continue to be served until further notice. New projects should use 3.5 Flash-Lite or 3.8 Flash.

Access to Gemini 2.5 models is limited to users who have actively used them in the past, while remaining served through the API without deprecation. New projects should use Gemini 3.5 Flash-Lite or 3.8 Flash.

Google released antigravity-preview-09-2026, replacing and deprecating antigravity-preview-05-2026, which shuts down on October 5, 2026. Remote-sandbox users reading only output_text or model_output need just the agent string updated, but local tool runners and function_call parsers must switch to new built-in tools including write_to_file, replace_file_content, view_file, list_dir, find_by_name, and grep_search; shell execution and web search are unchanged.

antigravity-preview-09-2026 replaces and deprecates antigravity-preview-05-2026, with built-in tool changes: write_file becomes write_to_file, full-rewrite editing becomes replace_file_content with line ranges, byte-offset reading becomes view_file, list_files becomes list_dir, and find_by_name and grep_search are added. Tool parameters now use PascalCase instead of snake_case, and antigravity-preview-05-2026 shuts down on October 5, 2026.

Two audio-to-audio models are generally available for real-time voice applications on the Live API: gemini-3.8-live, the default low-latency option with interleaved reasoning, default asynchronous function calling, and full session client content updates, and gemini-3.8-live-extended-thinking, which supports background reasoning during live audio interactions.

Two audio-to-audio models for real-time voice applications on the Live API are generally available: gemini-3.8-live for low-latency voice agents and real-time dialogue with interleaved reasoning and default asynchronous function calling, and gemini-3.8-live-extended-thinking for background reasoning during live audio interactions.

Google released Lyria 3.5 in public preview, the next generation of its music generation model. It generates full-length songs with improved musical coherence, natural vocals, and fine-grained duration and structural control, producing 44.1 kHz stereo audio from text and image inputs.

Lyria 3.5 is available in public preview, generating full-length songs with improved musical coherence, natural vocals, and fine-grained duration and structural control. The model accepts text and image inputs and outputs high-fidelity 44.1 kHz stereo audio.

Lyria 3.5 generates full-length songs with improved musical coherence, natural vocals, and fine-grained duration and structural control. The model accepts text and image inputs and outputs high-fidelity 44.1 kHz stereo audio.

Released gemini-3.8-flash as generally available, positioned as the most intelligent Flash model, built for long-horizon software engineering, autonomous agents, and complex enterprise workflows.

Gemini 3.8 Flash is now generally available, positioned as the most intelligent Flash model for long-horizon software engineering, autonomous agents, and complex enterprise workflows.

Gemini 3.7 Flash, 3.6 Flash, and 3.5 Flash-Lite now support agentic video understanding through the Interactions and GenerateContent APIs. Instead of processing entire timelines statically, the model dynamically requests transcripts, frames, or audio tracks on demand, cutting token usage by up to 88% on long-form content.

Agentic video understanding is now available for Gemini 3.7 Flash, 3.6 Flash, and 3.5 Flash-Lite across the Interactions and GenerateContent APIs. The model dynamically navigates video timelines, requesting transcripts, frames, or audio tracks on demand, using up to 88% fewer tokens for long-form content compared to static processing.

Gemini Omni Flash is generally available as gemini-omni-1.1-flash, adding video extension, first+last frame interpolation, and resolution control up to 4K. The gemini-omni-flash-preview endpoint is deprecated and will be removed on September 30, 2026.

Gemini Omni Flash (gemini-omni-1.1-flash) is now generally available as a fast, conversational video generation and editing model, supporting video extension, first/last-frame interpolation, and a new resolution parameter with 360p, 720p (default), 1080p, and 4K outputs. The gemini-omni-flash-preview endpoint is deprecated and will be retired on September 30, 2026.

Two speech-to-text models are now generally available: Gemini 3.5 Transcribe for high-accuracy non-streaming transcription with utterance-based language detection across 85+ languages, and Gemini 3.5 Transcribe Live for low-latency bidirectional streaming via the Live API.