OpenAI
OpenAI
Speech model · United States ·Jul 2026

GPT-Realtime-2.1

Speech Proprietary
128K
Context

About GPT-Realtime-2.1

GPT-Realtime-2.1 is an AI model developed by OpenAI, in the speech category, released in 2026, made available as a proprietary (API-only) model. GPT-Realtime-2.1 is OpenAI's updated Realtime API speech-to-speech model, released July 6, 2026, adding reasoning and to.

On this page you'll find GPT-Realtime-2.1's full specifications, including a context window of 128K tokens. Review provider pricing and benchmark scores below, or compare GPT-Realtime-2.1 head-to-head with other speech models.

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Frequently asked questions

What is GPT-Realtime-2.1? ▶

GPT-Realtime-2.1 is OpenAI's updated Realtime API speech-to-speech model, released July 6, 2026, adding reasoning and to It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created GPT-Realtime-2.1? ▶

GPT-Realtime-2.1 was developed by OpenAI and released in 2026.

Is GPT-Realtime-2.1 open source or proprietary? ▶

GPT-Realtime-2.1 is a proprietary model. It is accessed through an API rather than by downloading the weights.

What is GPT-Realtime-2.1's context window? ▶

GPT-Realtime-2.1 supports a context window of 128K tokens.

How much does GPT-Realtime-2.1 cost? ▶

Pricing for GPT-Realtime-2.1 depends on the provider. See the providers table on this page for the latest API rates.

How does GPT-Realtime-2.1 perform on benchmarks? ▶

Benchmark scores for GPT-Realtime-2.1 are listed on this page as they are published. You can compare it head-to-head with other models on the GenAIList compare tool.

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