Updated · Methodology: named formula library
Prompt Token Reduction
Estimate savings from prompt compression (10–50% reduction).
30 is 0.6% of 5,000.
Prompt Compression
Techniques: (1) summarize history, (2) drop verbose instructions, (3) use system prompts vs user, (4) cache repeated content. Typical savings: 20–40%, no quality loss.
Worked Example
30% of $5,000
- base
- 5000
- rate
- 30
- Result
- $1,500
$5,000 × 30% = $1,500.
When to Use This Calculator
- Cut LLM bills without infra changes
Limitations & Common Mistakes
- Results are estimates from your inputs.
- Verify with current data for major decisions.
Frequently Asked Questions
How is the percentage computed?
(Reduction / Current Tokens) × 100. The result tells you what fraction of the Current Tokens the Reduction represents. For inverse questions ("what's X% of Y?"), swap the inputs accordingly.
What if my percentage is over 100%?
Means Reduction exceeds Current Tokens. Common in growth calculations (sales doubled → 200%) or ratios where the "part" can legitimately exceed the "base." If unexpected, double-check your inputs.
Should I round the result?
For reporting: round to 1 decimal place (e.g., "23.4%"). For internal calculations: keep full precision. Conversion rates and engagement metrics conventionally show 2 decimals (e.g., "3.42% CTR").
What's a meaningful percentage in my context?
Depends on the metric. Conversion rate: 1–5% typical for SaaS landing pages. Engagement rate: 3–6% for mid-tier influencers. Tax rate: federal effective is 12–22% for most middle-class earners. Compare to industry benchmarks to interpret your number.
Related Calculators
More AI & Technology →Claude Opus 4.7 Cost Calculator
Estimate cost of Claude Opus 4.7 API calls from token volume.
Claude Sonnet 4.6 Cost Calculator
Estimate cost of Claude Sonnet 4.6 API calls from token volume.
GPT-5 API Cost Calculator
Estimate GPT-5 API cost from token volume.
Gemini 2 Pro Cost Calculator
Estimate Gemini 2 Pro API cost from token volume.
LLM Rate Limit Budget
Calculate sustainable request rate from your tokens-per-minute (TPM) limit.
Prompt Caching Savings
Estimate cost savings from prompt caching (90% off cached input).