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GPT-Audio-1.5

GPT-Audio-1.5 is an AI model made by OpenAI. It is generally available. It takes text, audio and returns text, audio. Its context window is 128,000 tokens.

OpenAI

GPT-Audio-1.5 is an AI model made by OpenAI. It is generally available. It takes text, audio and returns text, audio. Its context window is 128,000 tokens. Its longest answer is 16,384 tokens. Its knowledge cutoff is 30 September 2024.

Released
Not confirmed: its line was not found on its page, and a second reading did not confirm it
Status
Generally available — developers.openai.com, read 19 October 2026
Takes
Text, Audio — developers.openai.com, read 19 October 2026
Returns
Text, Audio — developers.openai.com, read 19 October 2026
Open weights
Not confirmed: The maker's pages do not state whether GPT-Audio-1.5 has open weights.
Licence
Not confirmed: The maker's pages do not state a licence for GPT-Audio-1.5.
Context window
128,000 tokens — developers.openai.com, read 19 October 2026
Longest answer
16,384 tokens — developers.openai.com, read 19 October 2026
Knowledge cutoff
30 September 2024 — developers.openai.com, read 19 October 2026
API price, input
Not confirmed: The maker's pricing page does not list this model. Its model page gives separate text-token and audio-token input prices, so a single standard input price cannot be confirmed for this field.
API price, output
Not confirmed: The maker's pricing page does not list this model. Its model page gives separate text-token and audio-token output prices, so a single standard output price cannot be confirmed for this field.
Where
API — developers.openai.com, read 19 October 2026
Parameters
Not confirmed: The maker's pages do not publish a parameter count for GPT-Audio-1.5.
Model card
https://developers.openai.com/api/docs/models/gpt-audio-1.5 — developers.openai.com, read 19 October 2026

Questions

Is GPT-Audio-1.5 still available?

Yes: it is generally available, as OpenAI states it.

What is the context window of GPT-Audio-1.5?

The context window of GPT-Audio-1.5 is 128,000 tokens, as OpenAI prints it.

What does GPT-Audio-1.5 take and return?

GPT-Audio-1.5 takes text, audio and returns text, audio.

What is the knowledge cutoff of GPT-Audio-1.5?

The knowledge cutoff of GPT-Audio-1.5 is 30 September 2024.

More from OpenAI

Sources

  1. GPT-Audio-1.5 Model | OpenAI API (read 19 October 2026)
  2. Changelog | OpenAI API (read 19 October 2026)
  3. Deprecations | OpenAI API (read 19 October 2026)

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