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Prompt Optimizer

Reduce token usage without losing quality. Paste your prompt, choose your model, and get 3 optimized variants instantly.

Your Prompt

0 tokens · 0 chars

Why prompt optimization saves real money

Input tokens are often overlooked in AI cost calculations — teams focus on output length but forget that long system prompts and verbose user instructions add up at scale. At 10,000 requests/day, even a 20% token reduction on a medium-sized prompt can save hundreds of dollars per month.

The Prompt Optimizer identifies the most common token-wasting patterns: filler phrases like "please can you", redundant qualifiers, duplicate sentences, and verbose vocabulary. It produces three variants so you can choose the right trade-off for your use case.

Three optimization strategies

How accurate is the token counter?

The live token counter uses a 4-chars/token approximation, which matches GPT-family tokenization within ±5% for typical English prose. For exact counts, use the OpenAI tokenizer or the OpenAI Tokenizer playground. The approximation is accurate enough for cost estimates and optimization comparisons.

🔌 Want to automate this? Use the NumStack API to optimize prompts programmatically: POST /api/calculators/prompt-optimizer