About

Built for people who pay AI bills

AI Cost Lab helps developers, founders and teams understand, compare and optimize the real cost of GPT-5, Gemini 2.5, Claude 3.5 and other modern AI models.

Why this exists

Pricing pages for AI models are complex, token-based and constantly changing. Teams often underestimate their real monthly bill, or choose a sub-optimal model simply because it’s hard to compare everything side by side.

AI Cost Lab was created to give you a single, clean interface where you can paste your prompts, simulate usage and instantly see how much each approach will cost – from simple chats to large scale fine-tuning or RAG setups.

🎯 Transparent costs

Estimate request, embeddings and fine-tuning costs across multiple providers in one place, without digging through pricing docs.

⚖️ Model comparison

Compare GPT-5 vs Gemini 2.5 vs Claude 3.5 side-by-side and choose the right balance of cost and capability.

💡 Prompt optimization

See how prompt length and structure affect your bill and explore savings by optimizing your inputs.

Our mission

We want to make AI economics simple, so you can spend less time guessing costs and more time building useful products. AI Cost Lab will keep evolving as new models and pricing schemes appear.

Get in touch

Have an idea, feature request or partnership question? We’d love to hear from you.

You can also use the contact form to send quick feedback.