Certificate: FA-2026-OCCC-K3DE4U

Certificate of Completion
has successfully completed
11 lessons · Final exam passed

Michail Ouroumis
Founder, FreeAcademy.ai
Verified Credential
FA-2026-OCCC-K3DE4U
Issued September 23, 2026
freeacademy.ai/verify/FA-2026-OCCC-K3DE4UThis course is 100% free. Enroll now and get the same certificate when you finish.

Master OpenAI Codex, the coding agent that works in your terminal and in the cloud. Learn the CLI with its three approval modes, run parallel sandboxed tasks with Codex Cloud, extend capabilities with the skills system, and coordinate multiple agents across large projects. Powered by GPT-5.3-Codex.