Calculator
LLM API Monthly Cost Estimator
Forecast 12-month API spend with scenario saver. Toggle requests/month, token split, and model mix.
Pricing data refreshed: 2026-05-01
Year 1 total
Anthropic · Claude Sonnet 4.6
$36,529
Month 1
100,000 req
$1,668$1,668Month 2
115,000 req
$1,918$3,586Month 3
130,000 req
$2,168$5,755Month 4
145,000 req
$2,419$8,173Month 5
160,000 req
$2,669$10,842Month 6
175,000 req
$2,919$13,761Month 7
190,000 req
$3,169$16,930Month 8
205,000 req
$3,419$20,350Month 9
220,000 req
$3,670$24,019Month 10
235,000 req
$3,920$27,939Month 11
250,000 req
$4,170$32,109Month 12
265,000 req
$4,420$36,529MonthlyCumulative
Forecast assumes a single primary model. For multi-model agents, run several scenarios and sum.
Frequently Asked Questions
How accurate are these calculators?+
Pricing is sourced from official provider documentation and refreshed monthly. Real bills can vary by 5–15% due to caching, batching, and region.
Are prices in USD?+
Yes, all prices are quoted in USD per the providers' billing currency.
How often is data updated?+
Pricing tables are reviewed and updated on the first of every month.
Can I trust these for budgeting?+
Use them as estimates. For production budgets, always validate with a 1-week pilot using your real workload.