Codex Pricecheck

Estimate the API-equivalent cost of local OpenAI Codex CLI sessions.

Codex Pricecheck reads the JSONL logs already stored in ~/.codex/sessions, keeps all processing local, and prints token use and an estimated USD cost per session. It supports a single session file or recursive directory scans, and can account for sessions that switch models.

Estimates use the current public API prices embedded in the script. They are not OpenAI invoices and do not include every possible tool or service-tier charge.

Requirements

Python 3. No third-party dependencies.

Usage

# One session
./codex_session_cost.py ~/.codex/sessions/2026/07/20/rollout-....jsonl

# One day (recursive)
./codex_session_cost.py ~/.codex/sessions/2026/07/20

# A whole year (recursive)
./codex_session_cost.py ~/.codex/sessions/2026

Without sorting, results are in chronological filename order. Add --sort to sort by cost, highest first:

./codex_session_cost.py ~/.codex/sessions/2026 --sort
./codex_session_cost.py ~/.codex/sessions/2026 --sort output
./codex_session_cost.py ~/.codex/sessions/2026 --sort filename --ascending

Supported sort columns are pricing, filename, input, cached, output, and model.

License

GNU Affero General Public License v3.0 or later. See LICENSE.