We read every OpenAI TTS / Realtime prompt guide so you don't have to.
Paste your prompt below - we'll rewrite it using OpenAI's official best practices.
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- Built on OpenAI's official prompting guide
- Handles realtime_api_bidirectional, function_calling_within_voice, persona_via_system_prompt automatically
- Free, instant, no signup
What OpenAI TTS / Realtime actually rewards
We pulled this from OpenAI's official guidance and what works in production. The short version:
- →Use the 'instructions' field for tone ('Speak like a calm, encouraging coach').
- →Pick voice that matches.
- →Chunk long content for streaming.
Before you hit send, check:
- ☐Did you use the 'instructions' field for tone ('Speak like a calm, encouraging coach')?
- ☐Pick voice that matches?
- ☐Chunk long content for streaming?
Common mistakes we fix automatically
- AvoidDon't use ElevenLabs [laughs] style tags (not supported).
- AvoidDon't expect singing.
Ready to rewrite for OpenAI TTS / Realtime?
Frequently asked questions
- Which versions of OpenAI TTS / Realtime does this support?
- We support gpt-4o-mini-tts, tts-1, tts-1-hd, gpt-realtime. We apply the prompt patterns OpenAI recommends for each, so the rewrite is tuned to the version you're using.
- Is my prompt stored or used for training?
- No. Prompts are sent to the rewriter, scored, returned, and discarded. We don't train on them and we don't keep them around.
- Do I need to know prompt engineering to use this?
- Nope. That's the point. Paste what you have, click Rewrite, get back a version that follows OpenAI's official guidance.
- What makes this different from OpenAI TTS / Realtime's own "improve prompt" feature?
- Built-in optimizers use the model's own preferences. Ours is built on OpenAI's official documentation and patterns that consistently produce better results in production. We keep rewrites inside the length window OpenAI TTS / Realtime responds best to.
Optimizing for a different AI?