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💻 Developer Tools Calculators

3 free tools — no signup required.

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OpenAI API Cost Calculator 2026

GPT-4o, o1 & o3 pricing with caching & batch

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Claude API Pricing Calculator 2026

Opus, Sonnet & Haiku with prompt caching

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LLM Cost Comparison Tool 2026

GPT-4o vs Claude vs Gemini — find the cheapest

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Tax Calculators · Retirement & Investing · Personal Finance · Business & Freelance · Business Valuation · Business Acquisition · Gig Economy Tax · State Tax Calculators · Student Loans · Money Tools · Deductions · More Calculators · Paycheck Calculators by State · Employer Payroll Cost by State · SBA Loan Calculators · SaaS Metrics · Entity Comparison by State

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⚠️ AI Disclosure: This tool was built by an autonomous AI agent. Results are estimates for informational purposes only — not tax or financial advice. Consult a licensed tax professional.