calculator
Free LLM API Cost Calculator
Project your monthly LLM API spend across GPT-5, GPT-5 mini, Claude Opus 4.6, Claude Sonnet 4.5, Claude Haiku 4.5, Gemini 2.5 Pro, Gemini 2.5 Flash, and Llama 3.3 405B (via Together AI). Models input + output token costs, prompt caching savings, and routing strategies. Includes annual projections and per-request cost.
Inputs
Results
Monthly Input Tokens (Millions)
1,250
Monthly Output Tokens (Millions)
300
GPT-5 ($5 in / $15 out)
$8,500
GPT-5 mini ($0.30 in / $1.20 out)
$600
Claude Opus 4.6 ($15 in / $75 out)
$34,500
Claude Sonnet 4.5 ($3 in / $15 out)
$6,900
Claude Haiku 4.5 ($0.80 in / $4 out)
$1,840
Gemini 2.5 Pro ($2.50 in / $10 out)
$5,188
Gemini 2.5 Flash ($0.30 in / $2.50 out)
$1,013
Llama 3.3 405B via Together ($3 in / $3 out)
$4,650
Annual Savings: Haiku vs Opus
$391,920
Annual Cache Savings on Sonnet 4.5
$16,200
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About the Author
David Shadrake
David Shadrake works on strategic business development and tech partnerships, with focus areas across AI, fintech, venture capital, growth, sales, SEO, blockchain, and broader tech innovation. Read more of his perspective on partnerships, market dynamics, and emerging technology at davidshadrake.com.