Gemini 3.5 Transcribe vs GPT-Transcribe: a head-to-head

Google launched Gemini 3.5 Transcribe on August 26, 2026, four weeks after OpenAI's GPT-Transcribe on July 28. Gemini reports 4.0% WER streaming and 2.6% for recorded audio with built-in diarization for up to three speakers and 85+ languages; GPT-Transcribe halves whisper-1's WER and costs $0.0045 per minute.

• Gemini 3.5 Transcribe: 4.0% WER streaming, 2.6% non-streaming, 85+ languages
• GPT-Transcribe cuts WER from 40.37% (whisper-1) to 19.27% on Common Voice
• GPT-Transcribe pricing: $0.0045/min file, $0.017/min streaming session
• Gemini has built-in diarization and timestamps; GPT-Transcribe needs separate models