Last refreshed 2026-10-19. Next refresh: weekly.
Why use GPT Realtime 2.1 on OpenAI API?
OpenAI API offers GPT Realtime 2.1 with pay-as-you-go pricing at $4.00/1M input tokens. OpenAI is a leading AI research and deployment company dedicated to developing safe and beneficial artificial general intelligence (AGI) for humanity.
Compare GPT Realtime 2.1 across 3 providers to find the best fit for your use caseInput / 1M
$4.00
Output / 1M
$24.00
Cache
Not sourced
Batch
Not sourced
Setup recipe
Python + curlInstall
pip install openaiAuth
export OPENAI_API_KEY=...Call
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(Model ID
gpt-realtime-2.1Request example
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="gpt-realtime-2.1",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
- The examples expect OPENAI_API_KEY; rename it only if your application config maps the new variable.
Compare GPT Realtime 2.1 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenAI API | $4.00 | $24.00 |
| Vercel AI Gateway | $4.00 | $24.00 |
| Microsoft Foundry | $4.00 | $24.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $4.00 |
| Output tokens | $24.00 |
Capabilities
VisionMultimodalReasoningAudio
About GPT Realtime 2.1
OpenAI Realtime API flagship speech-to-speech model (gpt-realtime-2.1) with text/audio/image input, text/audio output, 128K context, reasoning token support.
Get Started
Model Specs
Released2026-07-06
Context128K
Knowledge cutoff2024-09