Migrating from gpt-4o-realtime-preview-2024-12-17 to gpt-realtime-1.5
What changes when you move from gpt-4o-realtime-preview-2024-12-17 to gpt-realtime-1.5: prices, limits, features and parameters, read from each company's own pages.
- Status
- Retired
- Shutdown
- May 7, 2026
- Time left
- —
- Status
- Active
- Shutdown
- none announced
- Time left
- —
Prices
USD per 1M tokens, standard tier| Type | gpt-4o-realtime-preview-2024-12-17 | gpt-realtime-1.5 | Change |
|---|---|---|---|
| Input | Not published | $4.00first seen October 1, 2026 · source | — |
| Cached input | Not published | $0.40first seen October 1, 2026 · source | — |
| Output | Not published | $16.00first seen October 1, 2026 · source | — |
Other tiers, prompt-size bands and modalities are on each model's page.
Limits
Tokens| Limit | gpt-4o-realtime-preview-2024-12-17 | gpt-realtime-1.5 | Change |
|---|---|---|---|
| Context window | Not published | 32,000 tokensin place when tracking began (October 7, 2026) · source | — |
| Max output tokens | Not published | 4,096 tokensin place when tracking began (October 7, 2026) · source | — |
Features and parameters
Compare modelsNo feature is published for both models, so none can be compared.
Not published for gpt-4o-realtime-preview-2024-12-17: Structured outputs, Function calling, Prompt caching, Batch API, Image input, PDF input, Reasoning / thinking, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs, Context window, Max output tokens.
Not published for gpt-realtime-1.5: Structured outputs, 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-realtime-1.5 | Microsoft Foundryversion 2026-02-23 | gpt-realtime-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-4o-realtime-preview-2024-12-17togpt-realtime-1.5.
Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: gpt-4o-realtime-preview-2024-12-17, gpt-realtime-1.5.