AssemblyAI Universal-3.6 Pro vs OpenAI GPT-4o Transcribe
Specs, pricing, and capabilities side by side, plus outputs generated from identical prompts, so the only variable between the columns is the model.
AssemblyAI's speech-to-text model and the successor to Universal-3.5 Pro, served through its synchronous API for clips of up to two minutes. The app sends a longer recording in two-minute pieces and returns plain text.
Learn more about Universal-3.6 Pro →OpenAI's most accurate hosted transcription model, which follows a hint for names and terms and returns plain text without timestamps.
Learn more about GPT-4o Transcribe →Thanks for joining on such short notice. We moved the launch to Thursday, so could you send me your notes before lunch? I will share the final schedule with everyone tomorrow morning.
Thanks for joining on such short notice. We moved the launch to Thursday, so could you send me your notes before lunch? I will share the final schedule with everyone tomorrow morning.
Invoice 4471 is due on March 3rd, 2027. The total comes to $1,249.50 for 12 units, and the parcel weighs 2.5 kilograms. Please call Dr. Elena Markovich at 9:45 AM to confirm.
Invoice 4471 is due on March 3rd, 2027. The total comes to $1,249.50 for twelve units, and the parcel weighs 2.5 kilograms. Please call Dr. Elena Markovich at 9:45 AM to confirm.
Excuse me, is this seat taken? No, go ahead. Are you heading to the conference as well? I am. Do you know which stop it is? The one after the river, I think. We can walk over together.
Excuse me, is this seat taken?
Every transcript is the model’s first result for the shared clip (no cherry-picking), transcribed via OpenRouter. The clips are synthetic speech made with ElevenLabs v4, and an underlined word differs from the spoken script. Hover a copy icon to read the script.