Ideas
aideveloper-tools

LLM cost forecaster

Create a browser extension that estimates API costs before sending prompts. Show token counts and $ estimates in real-time.

Why now

Teams burn budgets on surprise LLM bills from long-running completions.

Who for
LLM developers
Business model
Freemium extension
Effort
A weekend

Developers accidentally rack up huge bills by not anticipating response lengths.

A plugin that analyzes prompt complexity and predicts token usage pre-submit.

Startups running lean will pay to avoid budget overruns.

First version just counts input tokens with historical averages.

Risk: API providers offering this natively.

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LLM cost forecaster — Ideas