What does AI Prompt Expander Online do?

AI Prompt Expander Online is a browser-based AI-prompt utility. It analyses, transforms, formats, or costs your prompt entirely client-side — no OpenAI/Anthropic key needed, no data ever sent to a language model.

Does AI Prompt Expander Online call a language model or API?

No — AI Prompt Expander Online is a static analyser. It uses local heuristics (token counting, quality scoring, format rewriting) so you can iterate on prompts privately without spending API credits or leaking proprietary prompt IP.

Which AI models does AI Prompt Expander Online cover?

AI Prompt Expander Online covers the current-generation models: OpenAI (GPT-4o, GPT-4o mini, o1, o3), Anthropic (Claude 3.5 Sonnet, Haiku, Opus), Google (Gemini 1.5 Pro, Flash), and popular image models (DALL-E 3, Midjourney, Stable Diffusion, Flux).

How accurate is the token count from AI Prompt Expander Online?

AI Prompt Expander Online uses a client-side tokeniser calibrated to OpenAI's tiktoken (cl100k_base) and Anthropic's Claude tokeniser. Token counts are within 1-2% of the official API result — accurate enough for cost estimation and context-window planning.

Is my prompt private when I paste it into AI Prompt Expander Online?

Yes. All prompt analysis runs in your browser — the text is never uploaded, logged, or shared with a language-model provider. Safe to use with proprietary system prompts and confidential instructions.

Is AI Prompt Expander Online free and unlimited?

Yes — no signup, no rate limits, no premium tier. Use it as much as you like on any device.

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AI Prompt Expander Online

Expand short prompts into detailed, high-quality prompts by adding context, format, and constraints. Free, no signup.

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