Gemini Omni Flash and Gemini 3.5 Transcribe reach the Gemini API

Google’s Gemini API changelog lists two significant late-August general-availability releases: Gemini 3.5 Transcribe on August 26 and Gemini Omni Flash on August 27. The releases target different workloads—low-latency speech-to-text and conversational video generation/editing—but both add production-oriented endpoints for developers.

Gemini 3.5 Transcribe for speech-to-text

The release includes gemini-3.5-transcribe, a dedicated non-streaming speech-to-text model. Google lists utterance-based language detection across more than 85 languages, speaker diarization, word-level timestamps, and custom vocabulary biasing for up to 1,000 terms.

Google also lists gemini-3.5-transcribe-live, a bidirectional streaming speech-to-text model over WebSockets through the Live API. It supports interim and final transcription events, Smart transcription mode, and multiple voice-activity-detection strategies.

These are model capabilities described in the API changelog, not a promise that every language or configuration has identical quality. Teams should test latency, diarization, and vocabulary behavior against their own audio before switching production traffic.

Gemini Omni Flash for video generation and editing

gemini-omni-1.1-flash is now generally available as a fast, conversational video generation and editing model. The API supports extending an existing video with the extend task, and interpolation between two images with the image_to_video task.

The release adds a resolution parameter in video_config with 360p, 720p (the default), 1080p, and 4k outputs. Google notes that 1080p and 4K outputs use upscaling, which is important when evaluating visual quality and processing expectations.

The older gemini-omni-flash-preview endpoint is scheduled for deprecation on September 30, 2026. Integrations using the preview endpoint should plan a migration rather than treating the GA release as a drop-in change without testing.

Sources

• Google AI for Developers — Gemini API changelog (August 26–27, 2026): https://ai.google.dev/gemini-api/docs/changelog
• Google for Developers on X — official developer updates: https://x.com/googledevs