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OpenAI · Voice model · GA
OpenAI: speech-to-speech with configurable reasoning and tool use developers.openai.com (opens in a new tab)
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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.
| Lab | OpenAI |
|---|---|
| Type | Voice |
| Status | GA developers.openai.com (opens in a new tab) |
| Released | 6 Jul 2026 models.dev (opens in a new tab) |
| API access | Yes developers.openai.com (opens in a new tab) |
| API model ID | gpt-realtime-2.1 developers.openai.com (opens in a new tab) |
| API rate limits | – |
| Consumer app plans | – |
| Price at each level | – |
| Input per 1M tokens | US$32 developers.openai.com (opens in a new tab)Audio tokens. Text input US$4 |
| Output per 1M tokens | US$64 developers.openai.com (opens in a new tab)Audio tokens. Text output US$24 |
| Cached input | US$0.4 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 | Yes developers.openai.com (opens in a new tab) |
| Tool use | Yes developers.openai.com (opens in a new tab) |
| Artificial Analysis index | – |
| Output speed | – |
| Time to first token | – |
| Reasoning levels | – |
| Lab benchmark claims | – |
| Limitations |
|
OpenAI: Remote MCP servers as a tool in the Responses API developers.openai.com (opens in a new tab). These official remote MCP servers fit that rule. We have not tested each server with this model. A server that publishes a client list is left out when this lab is not on it.
Same type, closest on quality index and blended price. A similarity, not a ranking.
Compare GPT-Realtime-2.1 with Grok Voice 3.0 and MiMo-V2.5-ASR
All 109 AI models · AI agents · How we check sources
OpenAI 
CNBC confirmed OpenAI is now seeking up to US$20bn, down from about US$30bn, and the FT put the post-money valuation at US$1.25tn. The round is still open. Less fresh equity means more scrutiny of every gigawatt OpenAI has signed for.
Source: CNBC (opens in a new tab)
OpenAI
OpenAI says Terra matches GPT-6 Astra on Agents' Last Exam at a tenth of the price per token and finishes tasks over 3x faster.
Source: OpenAI (opens in a new tab)
