ChatGPT voice mode runs on GPT-4o. That's a weaker model than the text interface. This article explores why voice assistants trade capability for speed.
Voice interfaces need sub-500ms latency. Frontier models are too slow. So providers quietly downgrade the model while keeping prices the same.
The honest approach would be explicit tiers. But that breaks the unified intelligence narrative. Users don't realize they're paying premium for degraded experience.
Voice isn't premium. It's a performance optimization dressed in better UX.
Ask someone what model their voice assistant runs. The pause tells you everything.
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