AI Engineering Tools

Every calculator on AIKit runs entirely in your browser — free, instant, and without signup.

LLM Tools

Tokens, API costs, and context windows.

Estimate token usage from raw text before sending it to an LLM.

Estimate API costs for LLM requests across providers and models.

See how much of a model's context window your prompt is using.

Embeddings, chunking, and RAG project costs.

Estimate the cost of embedding a document set for retrieval.

Calculate chunk counts from document size, chunk size, and overlap.

Estimate the full monthly operating cost of an AI application.

Classification and regression metrics.

Calculate accuracy, precision, recall, F1, and related metrics.

Calculate MAE, MSE, RMSE, R², and MAPE from actual/predicted values.