Lowest price
Choose GPT-Realtime Mini
GPT-Realtime Mini costs $10.00 / 1M audio tokens, against $32.00 / 1M audio tokens for GPT-Audio-1.5.
GPT-Audio-1.5 vs GPT-Realtime Mini: price, context and capabilities
Choose GPT-Audio-1.5 for very long inputs, the latest release and the most recent knowledge. Choose GPT-Realtime Mini for the lowest price.
In short
- GPT-Realtime Mini is 69% cheaper than GPT-Audio-1.5 at the headline price ($10.00 / 1M audio tokens vs $32.00 / 1M audio tokens).
- GPT-Audio-1.5 reads more per request: 128k tokens against 32k.
- GPT-Audio-1.5 is the newer model (Feb 23, 2026, against Oct 6, 2025).
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Very long inputs
Choose GPT-Audio-1.5
GPT-Audio-1.5 reads up to 128k tokens per request, against 32k for GPT-Realtime Mini.
Latest release
Choose GPT-Audio-1.5
GPT-Audio-1.5 is the newer release (Feb 23, 2026, against Oct 6, 2025 for GPT-Realtime Mini).
Most recent knowledge
Choose GPT-Audio-1.5
GPT-Audio-1.5 was trained on data up to September 2024, against October 2023 for GPT-Realtime Mini.
Specifications side by side
| GPT-Audio-1.5 | GPT-Realtime Mini | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Category | Voice and realtime | Voice and realtime |
| Status | Generally available | Deprecated |
| Headline price | $32.00 / 1M audio tokens | $10.00 / 1M audio tokens |
| Context window | 128k | 32k |
| Max output | 16k | 4k |
| Released | Feb 23, 2026 | Oct 6, 2025 |
| Knowledge cutoff | September 2024 | October 2023 |
| Licence | Proprietary | Proprietary |
| Capabilities | Audio input, Tool calling | Audio input, Tool calling |
| API model id | gpt-audio-1.5 | gpt-realtime-mini |
Frequently asked questions
Should I choose GPT-Audio-1.5 or GPT-Realtime Mini?
Choose GPT-Audio-1.5 for very long inputs, the latest release and the most recent knowledge. Choose GPT-Realtime Mini for the lowest price.
Which is cheaper, GPT-Audio-1.5 or GPT-Realtime Mini?
GPT-Realtime Mini is 69% cheaper than GPT-Audio-1.5 at the headline price ($10.00 / 1M audio tokens vs $32.00 / 1M audio tokens).
Which has the larger context window, GPT-Audio-1.5 or GPT-Realtime Mini?
GPT-Audio-1.5 reads more per request: 128k tokens against 32k.
What is the difference between GPT-Audio-1.5 and GPT-Realtime Mini?
GPT-Audio-1.5 is made by OpenAI and GPT-Realtime Mini by OpenAI. GPT-Realtime Mini is 69% cheaper than GPT-Audio-1.5 at the headline price ($10.00 / 1M audio tokens vs $32.00 / 1M audio tokens). GPT-Audio-1.5 reads more per request: 128k tokens against 32k. GPT-Audio-1.5 is the newer model (Feb 23, 2026, against Oct 6, 2025).
Which is newer, GPT-Audio-1.5 or GPT-Realtime Mini?
GPT-Audio-1.5 was released on Feb 23, 2026 and GPT-Realtime Mini on Oct 6, 2025.