toktrack scans your AI coding CLI session files and shows exactly how much you're spending — per model, per day. Works with Claude Code, Codex CLI (including gpt-5.3-codex), Gemini CLI, and OpenCode. One command: npx toktrack. Built in Rust with SIMD JSON parsing — scans 3,500+ session files in ~40ms. It also caches your cost history independently, so even after Claude Code deletes sessions (default 30 days), your data is preserved. Free and open source (MIT).