Question 1

What is the EOL Risk Score for OpenAI API o4-mini?

Accepted Answer

OpenAI API o4-mini has an EOL Risk Score™ of 45 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (15/40), Attack Surface (20/30), CISA KEV Exposure (0/20), and Extended Support Availability (10/10).

Question 2

Is OpenAI API o4-mini still supported?

Accepted Answer

OpenAI API o4-mini is currently supported. End of life is scheduled for October 23, 2026. Plan your migration before that date to avoid security risk.

Question 3

When does OpenAI API o4-mini reach end of life?

Accepted Answer

OpenAI API o4-mini reached (or will reach) end of life on October 23, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running OpenAI API o4-mini after end of life?

Accepted Answer

After end of life, OpenAI API o4-mini no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.