Build AI systems with better estimates.

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.

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.

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

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