Free API Cost Calculators for Developer.

Know your LLM, vector DB & API bill before it arrives

16 free calculators to estimate real API costs before you build: • LLM Token Cost (GPT-5, Claude, Gemini, DeepSeek) • Vector Database Cost (Pinecone, Qdrant, Supabase) • Embedding API Cost • Payment Processor Fees (Stripe, Paddle, Lemon Squeezy) • Auth Provider Cost (Clerk, Auth0, Supabase) • Cloud VPS Comparison • Serverless Cost Calculator • + 9 more No signup. No ads. Just the numbers. Built because I kept getting surprised by API bills.

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