GPT-4o Realtime
DeprecatedGPT-4o Realtime is OpenAI's language model with a 128K context window and up to 4K output tokens, available from 2 providers, starting at $5.00 / 1M input and $20.00 / 1M output. Preview release of GPT-4o Realtime, enabling bidirectional audio and text streaming over WebRTC or WebSocket for interactive voice applications.
Capabilities
Input2/5
Text✓
Image·
Audio✓
Video·
PDF·
Output2/5
Text✓
Image·
Audio✓
Video·
Embedding·
Capabilities2/13
Reasoning·
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling✓
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||||
|---|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Audio In $ / 1M | Audio Out $ / 1M | |
| $5.50 | $22.00 | $2.75 | $110.00 | $220.00 | |
| N/A | N/A | N/A | $44.00 | $88.00 | |
| $5.00 | $20.00 | $2.50 | $100.00 | $200.00 | |
| N/A | N/A | N/A | $40.00 | $80.00 | |
| $5.00 | $20.00 | $2.50 | $40.00 | $80.00 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| GPT-6.1 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-6 Sol | 1.1M | $2.00 | $10.00 | Available | |
| GPT-6 Luna | 1.1M | $0.100 | $0.500 | Available | |
| GPT-6 Astra | 1.1M | $10.00 | $50.00 | Available | |
| GPT-5.6 Sol | 1.1M | $4.00 | $20.00 | Available | |
| GPT-5.6 Terra | 1.1M | $2.00 | $12.00 | Available | |
| GPT-5.6 Luna | 1.1M | $0.200 | $1.20 | Available | |
| GPT-5.5 | 1.1M | $5.00 | $30.00 | Available | |
| GPT-5.4 Mini | 400K | $0.750 | $4.50 | Available | |
| GPT-5.4 Nano | 400K | $0.200 | $1.25 | Deprecating | |
| GPT-4o Realtime | 128K | $5.00 | $20.00 | Current |