Migrating from gpt-audio to gpt-audio-1.5
What changes when you move from gpt-audio to gpt-audio-1.5: input price 0%, output price 0%.
- From
- gpt-audio
- Status
- Deprecated
- Shutdown
- Jan 20, 2027
- Time left
- 97 days
- Status
- Active
- Shutdown
- none announced
- Time left
- —
Prices
USD per 1M tokens, standard tier| Type | gpt-audio | gpt-audio-1.5 | Change |
|---|---|---|---|
| Input | $2.50first seen October 1, 2026 · source | $2.50first seen October 1, 2026 · source | 0% |
| Output | $10.00first seen October 1, 2026 · source | $10.00first seen October 1, 2026 · source | 0% |
At 1M input and 250K output tokens a month: $5.00 on gpt-audio, $5.00 on gpt-audio-1.5 (0%).
Other tiers, prompt-size bands and modalities are on each model's page.
Limits
Tokens| Limit | gpt-audio | gpt-audio-1.5 | Change |
|---|---|---|---|
| Context window | 128,000 tokensin place when tracking began (October 7, 2026) · source | 128,000 tokensin place when tracking began (October 7, 2026) · source | 0% |
| Max output tokens | 16,384 tokensin place when tracking began (October 7, 2026) · source | 16,384 tokensin place when tracking began (October 7, 2026) · source | 0% |
Features and parameters
Compare modelsSame on both
- Function calling: supported on both.gpt-audio: in place when tracking began (October 7, 2026) · source · gpt-audio-1.5: in place when tracking began (October 7, 2026) · source
- Batch API: not supported on both.gpt-audio: in place when tracking began (October 7, 2026) · source · gpt-audio-1.5: in place when tracking began (October 7, 2026) · source
- Fine-tuning: not supported on both.gpt-audio: in place when tracking began (October 7, 2026) · source · gpt-audio-1.5: in place when tracking began (October 7, 2026) · source
Not published for gpt-audio: Structured outputs, Prompt caching, Image input, PDF input, Reasoning / thinking, Built-in web search, temperature parameter, top_p parameter, logprobs.
Not published for gpt-audio-1.5: Structured outputs, Prompt caching, Image input, PDF input, Reasoning / thinking, Built-in web search, temperature parameter, top_p parameter, logprobs.
Aliases
All aliasesNo aliases point at either model.
On cloud platforms
All platform dates| Model | Platform | Platform ID | Shutdown | Time left |
|---|---|---|---|---|
| gpt-audio | Microsoft Foundryversion 2025-08-28 | gpt-audio | Mar 2, 2027Active | 138 days |
| gpt-audio-1.5 | Microsoft Foundryversion 2026-02-23 | gpt-audio-1.5 | Aug 24, 2027Active | 313 days |
Read daily from each platform's own pages. The status above uses each company's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.
Checklist
- Change the model string from
gpt-audiotogpt-audio-1.5.
Counting to 7:00 pm ET on January 19, 2027, which is 00:00 UTC on January 20, 2027.
Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: gpt-audio, gpt-audio-1.5.