Discusses which models to choose for your audio/video files
CCV AI Services provides multiple AI models for your transcription needs. Each of these AI models comes with different characteristics for different transcription needs. This page discusses which model works best for you based on the type of audio files that you have.
TL;DR:
Below is the general rule-of-thumb:
Select Gemini for:
short audio/video files below approximately 30 minutes in duration
audio/video files contain conversational content without much background noise
better speaker diarization
better speed
accurate transcription text without accurate timestamps
Note
Although Gemini models technically support audio input of over 9 hours with its long context window, we do NOT recommend Gemini models for files longer than 1 hour.
Select OpenAI Whisper model for
long audio/video files over 30 minutes
more accurate timestamps
word-level timestamps
private transcription without a 3rd party API
captions/subtitles with better formatting
Select Qwen3-ASR model when
long audio/video files over 30 minutes
more accurate timestamps
word-level timestamps
private transcription without a 3rd party API
captions/subtitles with better formatting
at least 1.5 times faster speed vs. Whisper
better performance with audio with noisy backgrounds
better performance with singing voices
better performance with Chinese/Cantonese dialects
