OpenAI/ GPT
GPT-Realtime-2.1
openai/gpt/realtime-2-1
Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior
Released
2026-07-06
Context window
128K
Max output
32K
Weights
Closed
Modalities
Input
TextAudioImage
Output
TextAudio
Identity
- Version
- gpt-realtime-2.1
- Knowledge cutoff
- 2024-09-30
- Aliases
- GPT-Realtime-2.1
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| Vercel AI Gateway | openai/gpt-realtime-2.1 | openai_chat | 128K | 32K | TextAudioImage | TextAudio | AttachmentsReasoningTool call | - | input $4/M · cache read $0.4/M output $24/M | Yes |
| OpenAI | gpt-realtime-2.1 | openai_responses | 128K | 32K | TextAudioImage | TextAudio | AttachmentsReasoningTool call | - | input $4/M · cache read $0.4/M output $24/M | Yes |
Capabilities
AttachmentsReasoningTool call
Official price
input $4/M · cache read $0.4/M
output $24/M