> ## Documentation Index
> Fetch the complete documentation index at: https://koreai.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT Realtime 1.5 — Quick Reference

## Prompt Components Checklist

| Component             | One-liner                                                                                           |
| --------------------- | --------------------------------------------------------------------------------------------------- |
| Role and Objective    | Who the assistant is and what it must complete. Pin identity tightly — the model adheres literally. |
| Personality and Tone  | Warmth, professionalism, pacing, and brevity. Define multi-emotion switches if needed.              |
| Language              | Default language; lock to one or allow code-switching with explicit rules. Never infer from accent. |
| Greeting              | Brief, on-brand opener. Vary across sessions; don't reuse the same phrase.                          |
| Voice Output Style    | Short conversational replies. No markdown, bullet points, or lists read aloud.                      |
| Tool Usage Policy     | When to call tools, how to select them, and never fabricate results.                                |
| Tool Call Preambles   | One short spoken line before any tool call (e.g. "I'll check that now") to mask latency.            |
| Don't Announce Tools  | Never expose tool names, backend mechanics, or system details to the user.                          |
| Input Gathering       | Collect all required values one at a time before calling any tool.                                  |
| Capability Boundaries | Don't claim abilities beyond the available tools.                                                   |
| Conversation Context  | Reuse details from earlier turns; never re-ask what was already given.                              |
| Unclear Audio         | Ask user to repeat; never guess or fabricate from noisy or partial audio.                           |
| No Human Handoff      | Never offer to transfer or escalate to a human agent.                                               |
| Expert Posture        | Act as the expert resolving the request, not a router passing it along.                             |

## Best Practices

* Iterate relentlessly: Small wording changes can make or break behavior. Example: For unclear audio instruction, we swapped “inaudible” → “unintelligible” which improved noisy input handling.
* Prefer bullets over paragraphs: Clear, short bullets outperform long paragraphs.
* Guide with examples: The model closely follows sample phrases.
* Be precise: Ambiguity or conflicting instructions = degraded performance similar to GPT-5.
* Control language: Pin output to a target language if you see unwanted language switching.
* Reduce repetition: Add a Variety rule to reduce robotic phrasing.
* Use capitalized text for emphasis: Capitalizing key rules makes them stand out and easier for the model to follow.
* Convert non-text rules to text: instead of writing “IF x > 3 THEN ESCALATE”, write, “IF MORE THAN THREE FAILURES THEN ESCALATE”.

[Find more details](https://developers.openai.com/api/docs/guides/realtime-models-prompting#realtime-15-prompting-guide).