--- title: "gpt-4o-realtime-preview - Model Details & Comparison" description: "gpt-4o-realtime-preview from OpenAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models." url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-4o-realtime-preview" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-4o-realtime-preview.md" --- # gpt-4o-realtime-preview - Model Details & Comparison > gpt-4o-realtime-preview from OpenAI: capabilities, context limits, pricing, and side-by-side comparisons with alternative models. ## Important Links - [View MCP Gateway](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources/mcp-gateway.md) - [Features](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/#features) - [Enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) ## About gpt-4o-realtime-preview gpt-4o-realtime-preview is a realtime model from OpenAI, one of 14 realtime models they offer. It is priced at $5.00 per 1M input tokens and $20.00 per 1M output tokens, ranking 22 out of 28 realtime models by cost and cheaper than 14% of models in this category. gpt-4o-realtime-preview supports function calling, audio input, audio output. It accepts up to 128K input tokens. ## Specifications - **OpenAI Provider.** - **Realtime Mode.** - **128,000 Max Input Tokens.** - **4,096 Max Output Tokens.** - **4,096 Max Tokens.** - **$5.00 / 1M tokens Input Price.** - **$20.00 / 1M tokens Output Price.** ## Capabilities gpt-4o-realtime-preview supports: Function Calling, Audio Input, Audio Output, Parallel Function Calling, System Messages, Tool Choice. ## gpt-4o-realtime-preview Pricing Overview At $5.00 per 1M input tokens and $20.00 per 1M output tokens, gpt-4o-realtime-preview ranks 22 out of 28 realtime models by input cost. It is more expensive compared to the median of $4.00 for realtime models, and is cheaper than 14% of models in this category. gpt-4o-realtime-preview is one of 14 OpenAI realtime models, with support for function calling, audio input, audio output. ## Models to Compare Alternatives to gpt-4o-realtime-preview with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | gpt-4o-realtime-preview-2024-10-01 | Azure | $5.50 | $22.00 | | gpt-4o-realtime-preview-2024-12-17 | Azure | $5.50 | $22.00 | | gpt-realtime-2025-08-28 | Azure | $4.00 | $16.00 | | gpt-realtime-1.5-2026-02-23 | Azure | $4.00 | $16.00 | | gpt-4o-mini-realtime-preview-2024-12-17 | Azure | $0.66 | $2.64 | - [Compare gpt-4o-realtime-preview-2024-10-01](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-4o-realtime-preview-2024-10-01.md) - [Compare gpt-4o-realtime-preview-2024-12-17](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-4o-realtime-preview-2024-12-17.md) - [Compare gpt-realtime-2025-08-28](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-realtime-2025-08-28.md) - [Compare gpt-realtime-1.5-2026-02-23](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-realtime-1.5-2026-02-23.md) - [Compare gpt-4o-mini-realtime-preview-2024-12-17](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-4o-mini-realtime-preview-2024-12-17.md) ## Related Resources - [Calculate gpt-4o-realtime-preview costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openai/model/gpt-4o-realtime-preview.md) - [Check OpenAI status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/openai.md) - [All OpenAI pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openai.md) ## FAQ ### Is gpt-4o-realtime-preview cheaper than gpt-4o-realtime-preview-2024-10-01? Yes. gpt-4o-realtime-preview costs $5.00 per 1M input tokens compared to gpt-4o-realtime-preview-2024-10-01's $5.50 per 1M input tokens, making it 10% more affordable. Both are realtime models and share support for function calling, audio input, audio output. ### How does gpt-4o-realtime-preview pricing compare to the average realtime model? gpt-4o-realtime-preview input pricing is $5.00 per 1M tokens, which is 25% above the median of $4.00 for realtime models. It ranks 22 out of 28 realtime models by input cost, making it cheaper than 14% of models in this category. For output, it costs $20.00 per 1M tokens compared to the median of $16.00. ### What makes gpt-4o-realtime-preview different from other OpenAI models? Among OpenAI's 14 realtime models, gpt-4o-realtime-preview ranks 12 by input cost. ### What are the best alternatives to gpt-4o-realtime-preview? The most comparable realtime models to gpt-4o-realtime-preview are: gpt-4o-realtime-preview-2024-10-01 from Azure ($5.50/1M input tokens); gpt-4o-realtime-preview-2024-12-17 from Azure ($5.50/1M input tokens); gpt-realtime-2025-08-28 from Azure ($4.00/1M input tokens); gpt-realtime-1.5-2026-02-23 from Azure ($4.00/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library. ### How do I check if OpenAI is down? You can monitor OpenAI service health in real time on the Bifrost OpenAI Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### How do I calculate gpt-4o-realtime-preview costs? gpt-4o-realtime-preview is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $5.00 and generating 1M output tokens costs $20.00. ## Related Resources - [OpenAI models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/openai.md) - [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md) - [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) - [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md) --- *This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-4o-realtime-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-4o-realtime-preview) for AI/LLM consumption.*