GPT-Realtime-2.1
Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior
Cheapest input
$4
$/MTok · models.dev
Cheapest output
$24
$/MTok
Context
128K
tokens
Offers
3
2 sources
Offers
Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.
| Source | Provider | Input | Output | Cache read | Context |
|---|---|---|---|---|---|
| models.devcheapestgpt-realtime-2.1 | OpenAI | $4 | $24 | $0.4 | 128K |
| models.devopenai/gpt-realtime-2.1 | Vercel AI Gateway | $4 | $24 | $0.4 | 128K |
| LiteLLMgpt-realtime-2.1 | — | $4 | $24 | $0.4 | — |
Capabilities
- Reasoning
- Tool calling
- Attachments
- In: text
- In: audio
- In: image
- Out: text
- Out: audio
Knowledge cutoff: 2024-09-30Released: 2026-07-06Family: gpt