GPT-Realtime-2.1
OpenAI · Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior
Key facts
- Provider
- OpenAI
- Context window
- 128K tokens
- Max output
- 32K tokens
- Input price
- $4 / M tok
- Output price
- $24 / M tok
- Knowledge cutoff
- Sep 30, 2024
- Released
- Jul 6, 2026
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Reasoning options
- effort minimal · low · medium · high · xhigh
Pricing
USD per million tokens, list API rates.
- Input
- $4
- Output
- $24
- Cache read
- $0.4
- Cache write
- —
Modalities
- Input
- Text, Audio, Image
- Output
- Text, Audio