Free AI Token & LLM API Cost Calculator (GPT-4o, Claude 3.5 & Llama) Online
Calculate exact token consumption (BPE heuristic ~4 chars/token) and forecast API costs across OpenAI GPT-4o, Claude 3.5 Sonnet, and Llama 3. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Paste Prompt or Text
Input your candidate system instructions or dataset.
Token Estimation Engine
Evaluates token density using Byte-Pair Encoding (BPE) length heuristics.
Compare Model Pricing Table
View cost per prompt across GPT-4o, Claude 3.5, Gemini 1.5, and Llama.
Export Budget Estimates
Copy cost metrics for annual SaaS budget planning.
Frequently Asked Questions
Related Math & Science Calculators & Utilities
Interlinked precision tools in the Math & Science collection.
Scientific Calculator (Trigonometry, Logarithms & Powers)
High-precision scientific calculator supporting sine, cosine, tangent, natural log (ln), exponential powers, square roots, and radian/degree modes.
Quadratic Equation Solver (Real & Complex Roots with Steps)
Solve any quadratic equation ax² + bx + c = 0 instantly. Computes discriminant (b² - 4ac), real roots, and complex imaginary roots with full steps.
Standard Deviation & Variance Calculator (Sample & Population)
Calculate Population (σ) and Sample (s) Standard Deviation, Variance, Mean, Sum of Squares, and Margin of Error for any numeric dataset.
Permutations & Combinations Calculator (nPr & nCr)
Calculate combinations nCr (order does not matter) and permutations nPr (order matters) with full factorials and step-by-step breakdown.
Percentage Increase & Decrease Calculator
Calculate percentage increase, percentage decrease, and percentage difference between any two values with step-by-step algebraic math.
Fraction Simplifier & Mixed Number Calculator
Simplify improper fractions to lowest terms, convert fractions to decimals, find mixed numbers, and execute fraction addition/multiplication.