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OpenAI · Voice model · GA
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Figures checked 1 Nov 2026. A dash means not published on the sources we checked, so it stays blank rather than estimated.
US$ per 1M tokens, standard tier, short prompts. Output left blank where not published.
| Model | Input US$/1M | Output US$/1M |
|---|---|---|
| GPT-Realtime-2.1 mini | 10 | 20 |
| Gemini 3.5 Transcribe Live | 3.5 | 21 |
| Amazon Nova 2 Sonic | 3 | 12 |
| Amazon Nova 2.5 Sonic | 3 | 12 |
| Gemini 3.8 Live | 3 | 12 |
| Lab | OpenAI |
|---|---|
| Type | Voice |
| Status | GA developers.openai.com (opens in a new tab) |
| Released | – |
| API access | Yes developers.openai.com (opens in a new tab) |
| API model ID | gpt-realtime-2.1-mini developers.openai.com (opens in a new tab) |
| API rate limits | – |
| Consumer app plans | – |
| Price at each level | – |
| Input per 1M tokens | US$10 developers.openai.com (opens in a new tab)Audio tokens. Text input US$0.60 |
| Output per 1M tokens | US$20 developers.openai.com (opens in a new tab)Audio tokens. Text output US$2.40 |
| Cached input | US$0.3 developers.openai.com (opens in a new tab) |
| Batch in / out | – |
| Other pricing | – |
| Context window | 128K tokens developers.openai.com (opens in a new tab) |
| Max output | 32K tokens developers.openai.com (opens in a new tab) |
| Input types | text, audio, image developers.openai.com (opens in a new tab) |
| Output types | text, audio |
| Weights | Closed developers.openai.com (opens in a new tab) |
| Reasoning | – |
| Tool use | – |
| Artificial Analysis index | – |
| Output speed | – |
| Time to first token | – |
| Reasoning levels | – |
| Lab benchmark claims | – |
| Limitations | – |
GPT-Realtime-2.1 mini has no published tool use, so we do not match it to MCP servers. Browse AI tools
Same type, closest on quality index and blended price. A similarity, not a ranking.
Compare GPT-Realtime-2.1 mini with Gemini 3.5 Transcribe Live and Amazon Nova 2 Sonic
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Source: CNBC (opens in a new tab)
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Source: OpenAI (opens in a new tab)
