GPT-4o-realtime Preview
GPT-4o-realtime Preview is a text model from 
Azure OpenAI with a context window of 128K tokens and max output of 4K tokens. Pricing starts at 5.50 per million input tokens and 22.00 per million output tokens (cheapest at Azure OpenAI).
Capabilities
✗ Vision✓ Function Calling✗ Reasoning✗ JSON Schema✓ System Messages✗ Web Search✗ Prompt Caching✓ Audio Input✓ Audio Output
Specifications
| Model Key | azure/eu/gpt-4o-realtime-preview-2024-10-01 |
| Provider | Azure OpenAI |
| Provider ID | azure |
| Mode | Text |
| Canonical Name | gpt-4o-realtime-preview |
| Context Window | 128K tokens |
| Max Output | 4K tokens |
Pricing
| Type | Per 1K Tokens | Per 1M Tokens |
|---|---|---|
| Input Tokens | 0.0055 | 5.50 |
| Output Tokens | 0.022 | 22.00 |
| Cache Read (Input) | 0.0027 | 2.75 |
Benchmarks
| Time to First Token | 0.00s |
Price Comparison by Provider
Compare prices for GPT-4o-realtime Preview across different providers. The same model may be available through multiple providers at different price points.
Provider | Model Key | Input Price, $ | Output Price, $ |
|---|---|---|---|
 OpenAI | gpt-4o-realtime-preview | 5.00 | 20.00 |
| Azure OpenAI | azure/gpt-4o-realtime-preview-2024-10-01 | 5.00 | 20.00 |
All Variants
All available versions, regions, and API endpoints for GPT-4o-realtime Preview.
Model Key | Provider | Mode | Input Price, $ | Output Price, $ | Context | Max Output | Vision | Functions |
|---|---|---|---|---|---|---|---|---|
| azure/eu/gpt-4o-realtime-preview-2024-10-01 | Azure OpenAI | Text | 5.50 | 22.00 | 128K | 4K | no | yes |
| azure/eu/gpt-4o-realtime-preview-2024-12-17 | Azure OpenAI | Text | 5.50 | 22.00 | 128K | 4K | no | yes |
| azure/gpt-4o-realtime-preview-2024-10-01 | Azure OpenAI | Text | 5.00 | 20.00 | 128K | 4K | no | yes |
| azure/gpt-4o-realtime-preview-2024-12-17 | Azure OpenAI | Text | 5.00 | 20.00 | 128K | 4K | no | yes |
| azure/us/gpt-4o-realtime-preview-2024-10-01 | Azure OpenAI | Text | 5.50 | 22.00 | 128K | 4K | no | yes |
| azure/us/gpt-4o-realtime-preview-2024-12-17 | Azure OpenAI | Text | 5.50 | 22.00 | 128K | 4K | no | yes |
| gpt-4o-realtime-preview | OpenAI | Text | 5.00 | 20.00 | 128K | 4K | no | yes |
| gpt-4o-realtime-preview-2024-10-01 | OpenAI | Text | N/A | N/A | 128K | 4K | no | yes |
| gpt-4o-realtime-preview-2024-12-17 | OpenAI | Text | 5.00 | 20.00 | 128K | 4K | no | yes |
| gpt-4o-realtime-preview-2025-06-03 | OpenAI | Text | 5.00 | 20.00 | 128K | 4K | no | yes |