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SwapGPT-Realtime-2.1
An updated OpenAI voice model that listens and replies more smoothly, offered to developers in a full and a smaller version.
Release page →GPT Transcribe
OpenAI's new Speech-to-text: Turns spoken audio into written text. Also called transcription or ASR. service turns spoken audio into written text, offered to developers through its paid API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet. rather than as a free download.
Release page →The basics
Released
What it does
Knowledge cutoff
The latest events it learned about
Download
Where to use it
Price and limits, for developers
Input
Per million tokens
Output
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Cached input
Per million tokens
Context window
How much it takes in at once
Longest answer
How they score
Neither model is in the public rankings trckr follows yet. New models usually appear within a few weeks of launch.
Green marks the better of the two on each row, red the other. Rows where one side isn't listed, or where the gap is too close to call, stay plain.
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Rankings from LMArena and Epoch AI, both CC BY 4.0, updated . Developer prices, context windows and knowledge cutoffs from the labs' own listings on models.dev and from OpenRouter. The app links go to each maker's own app when no source says exactly where the model is available.