Updated · Methodology: named formula library
GPT-5 API Cost Calculator
Estimate GPT-5 API cost from token volume.
1,000,000 tokens × $0/token = $10.
GPT-5 Pricing (estimate)
Input: ~$10 / million tokens. Output: ~$30 / million tokens. Verify on OpenAI's pricing page — pricing changes frequently.
Worked Example
1000000 tokens at 0.00001/token
- usage
- 1000000
- rate
- 0.00001
- Result
- $10
1000000 × 0.00001 = $10.
When to Use This Calculator
- Compare GPT-5 to Claude Opus on cost
Limitations & Common Mistakes
- Results are estimates based on the inputs you provide.
- Always verify with current data and consult a professional for major decisions.
Frequently Asked Questions
How is GPT-5 API Cost Calculator cost calculated?
Cost = tokens × rate per token. The default rate ($0.00001/token) reflects current U.S. average pricing. Replace with your actual contracted rate for an exact number.
What's the average token cost?
The default of $0.00001 per token is the U.S. average as of 2026. Regional variation is significant — urban areas are typically 20–40% higher than rural; coastal states 10–25% higher than the Midwest.
How can I reduce this cost?
For utility bills: efficiency upgrades, off-peak usage, conservation. For SaaS/cloud: rightsize tier, audit for unused services, negotiate annual commitments for 15–25% off list price. For LLM API: prompt caching (90% off cached input), batch API (50% off async jobs), smaller models for simpler tasks.
Does this include taxes and fees?
No. Bills typically include 5–15% in taxes, surcharges, and regulatory fees on top of the metered rate. To get total cost from this estimate, multiply the result by 1.10 as a rough placeholder, or check your actual bill for itemized fees.
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