Prompt Optimizer
Auto-detects English, Chinese, and Japanese. Strips filler words, compresses verbose phrasings, and removes repeated instructions. Compare token counts live and save on every API call.
Ready to Optimize
Paste your prompt on the left and click Optimize β
Optimize your prompts to save 30%-60% extra on API costs with Kie.ai
After compressing tokens with this optimizer, cut your API costs even further β Kie.ai aggregates GPT-5.5, Claude 3.7, DeepSeek V4 and 200+ models at 30β60% off official pricing.
Frequently Asked Questions
Q: Will the optimized prompt affect output quality?
This tool removes semantically redundant content (filler words like 'please', 'kindly', verbose phrases like 'in order to' β 'to'). These carry no actionable meaning and their removal won't affect the model's understanding. However, we recommend reviewing the result to ensure all critical instructions are preserved.
Q: Is my prompt data sent to any server?
Absolutely not. The Prompt Optimizer is a 100% client-side rule engine. All text processing happens locally in your browser β no data is sent to any server. You can safely use it with confidential prompts.
Prompt Engineering Best Practices
Core principles of efficient prompting β convey the clearest instructions with the fewest tokens:
- Use Imperative Form β Replace 'Can you please write...' with 'Write...' β saves up to 20% tokens
- Specify Output Structure β Use 'Output as JSON:' instead of lengthy format descriptions
- Shorten Role Prefixes β Move verbose role definitions to System Prompt or shorten to 'Expert in X:'
- Leverage Prompt Caching β Place static instructions at the top of your System Prompt. DeepSeek / Gemini cache hits reduce input costs by up to 90%