Fact · Transcription
9.5hours of audio per prompt
Google's Gemini API documentation gives the maximum audio length as 9.5 hours per prompt.
Checked against its source on October 17, 2026
In the source's own words
“Max length: 9.5 hours of audio per prompt”
Audio understanding (Gemini API), Google, Google AI for Developers, 2026, Technical details about audio.
Open the original- What it measures
- This figure is for the developer API, which is a different product from the Gemini app. The page lists it with the token rate and channel handling for audio input.
- What it does not show
- The Gemini app sets its own limits. Do not assume the API figure applies inside the app.