Model Details
Owner
OpenAI
Released
Jul 2026
Status
Active
Context Length
128K
Max Output
32K
Provider
OpenAI
Where is gpt-realtime-2.1 a perfect fit?
GPT-Realtime-2.1 is OpenAI's realtime reasoning model for sophisticated voice agents. It improves GPT-Realtime-2's alphanumeric recognition, silence and noise handling, and interruption behavior while adding configurable reasoning and tool use.
- Low-latency, natural speech-to-speech assistants
- Customer-service and call-center voice agents
- Voice agents requiring function calling and external tools
- Noisy environments where silence and background-noise handling matter
- Phone workflows requiring accurate recognition of names, numbers, codes, and other alphanumeric information
- Interactive applications where users frequently interrupt or change direction
- Complex voice workflows benefiting from configurable reasoning effort
- Multimodal applications combining live audio with text and image inputs
- Low-latency, natural speech-to-speech assistants
- Customer-service and call-center voice agents
- Voice agents requiring function calling and external tools
- Noisy environments where silence and background-noise handling matter
- Phone workflows requiring accurate recognition of names, numbers, codes, and other alphanumeric information
- Interactive applications where users frequently interrupt or change direction
- Complex voice workflows benefiting from configurable reasoning effort
- Multimodal applications combining live audio with text and image inputs
Quick Model Estimate
Your GPT-5 Cost Estimate
💰 Total Cost
USD 3.00
for 1000 input + 1000 output tokens
📥 Input (1000 × $32.000000)
USD 1.5000
📤 Output (1000 × $64.000000)
USD 1.5000
Cost Breakdown
📥 Input 50%
📤 Output 50%
Prices updated daily from official provider data.
