GPT Realtime 2.1
API ID gpt-realtime-2.1
gpt-realtime-2.1 is an OpenAI model. It has a 128,000-token context window and up to 32,000 output tokens. It supports function calling and reasoning. Standard price: $4.00 input and $24.00 output per 1M tokens.
- Status
- Active
- Released
- —
- Shutdown
- none announced
- Replacement
- —
No deprecation or shutdown date has been announced as of October 15, 2026.
On cloud platforms
All platform dates| Platform | Platform ID | State | Shutdown | Time left | Replacement | Source |
|---|---|---|---|---|---|---|
| Microsoft Foundryversion 2026-07-07 | gpt-realtime-2.1 | Active | Jun 25, 2027 | 253 days | — | source |
Read daily from each platform's own pages. The shutdown date and countdown on this page use OpenAI's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Function callingAlso called tool use. You describe functions; the model replies with a function name and arguments for your code to run, then uses the result. | Supported | in place when tracking began (October 7, 2026) | source |
| Prompt cachingA prompt prefix you send again and again (system prompt, documents, tools) is cached, so later requests cost less and start faster. | Supported | in place when tracking began (October 7, 2026) | source |
| Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests. | Not supported | in place when tracking began (October 7, 2026) | source |
| Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time. | Supported | in place when tracking began (October 7, 2026) | source |
| Fine-tuningYou can train your own version of the model on your examples through the company's API, then call it like any other model. | Not supported | in place when tracking began (October 7, 2026) | source |
| Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word. | 128,000 tokens | in place when tracking began (October 7, 2026) | source |
| Max output tokensThe longest reply the model can write in one response, in tokens. A token is about three-quarters of an English word. | 32,000 tokens | in place when tracking began (October 7, 2026) | source |
Not published by OpenAI: Structured outputs, Image input, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Price history
USD per 1M tokens, standard tierWe started recording this model's prices on Oct 1, 2026. The history grows with each daily check.
Show as a table
| From | Type | Price |
|---|---|---|
| Oct 1, 2026 | Input | $4.00 |
| Oct 1, 2026 | Output | $24.00 |
Prices
USD per 1M tokens, every type and band, by tier| Type | Modality | Price $/1M | In effect |
|---|---|---|---|
| Standard | |||
| input | audio | $32.00 | |
| input | image | $5.00 | |
| input | text | $4.00 | |
| cached input | audio | $0.40 | |
| cached input | image | $0.50 | |
| cached input | text | $0.40 | |
| output | audio | $64.00 | |
| output | text | $24.00 | |
Changelog
Changes we detected on OpenAI's pagesNo changes recorded yet.
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Last checked · Sources: OpenAI deprecations, OpenAI pricing, OpenAI models