CodeBurn is an open-source CLI tool and interactive TUI dashboard for tracking AI coding token costs across Claude Code, Codex (OpenAI), Cursor, and OpenCode. It reads session data directly from disk without requiring API keys or proxies, classifies usage into 13 task categories, tracks one-shot success rates, and supports per-project/per-model/per-tool breakdowns. Features include a macOS menu bar widget via SwiftBar, CSV/JSON export, multi-currency support with live exchange rates, and a provider plugin system for adding new tools. Pricing data is sourced from LiteLLM and cached locally.