OpenAI July 23, 2026 Outage: What Went Down and Why It Confused Users

How the mitigation effort unfolded

OpenAI's official status page tracked the incident through several stages. The company listed the incident as "Investigating" for roughly four hours before applying a mitigation fix . After applying the fix, OpenAI moved to "Monitoring" status to track recovery. By the time 9to5Mac reported on the outage, the incident had been ongoing for about four hours, with a mitigation applied roughly two hours prior . User reports on Downdetector began trending downward after the fix was applied, though some users on social media still reported issues .

A separate incident on the same day tracked "Image generation unavailable in ChatGPT and API" through its own investigation, mitigation, and monitoring phases, indicating that multiple issues were being addressed concurrently .

A string of recent outages

The July 23 outage was not an isolated event. OpenAI's systems had experienced several disruptions in the weeks leading up to it:

• July 21, 2026 (14-hour outage). A major incident lasted approximately 14 hours and 25 minutes, affecting FedRAMP logins and API performance .
• July 20, 2026 (FedRAMP workspace issues). Codex, workspace analytics, conversation search, custom GPT search, ChatGPT user invites, and the Compliance Log Platform download endpoint were all non-functional in FedRAMP workspaces .
• July 19, 2026 (elevated errors). ChatGPT experienced elevated error rates when loading or continuing conversations .
• July 7, 2026 (ChatGPT outage). Another broad outage hit ChatGPT, Codex, Custom GPTs, and workspace analytics .
• July 14-15, 2026 (login issues). An incident involving login issues and intermittent errors affecting ChatGPT was investigated and resolved within about an hour .
• June 3, 2026 (API + ChatGPT down). The OpenAI API, ChatGPT, and Codex all went down, returning 5xx errors for API endpoints .
• April 20, 2026 (widespread Codex + ChatGPT outage). Thousands of users globally reported a widespread outage affecting both web and mobile versions of ChatGPT and Codex .

The coinciding model deprecation wave that added confusion

On the same day as the outage, OpenAI executed a large, pre-announced wave of model deprecations. On July 23, 2026, OpenAI shut down approximately 15 model snapshots and aliases, including:

• computer-use-preview-2025-03-11
• gpt-5-chat-latest, gpt-5-codex
• gpt-5.1-chat-latest, gpt-5.1-codex
• gpt-5.2-codex
• gpt-4o-search-preview
• o3-deep-research, o4-mini-deep-research

Developers were directed to migrate to newer models such as gpt-5.5, gpt-5.4-mini, and gpt-5.5-pro . These removals were announced months in advance — OpenAI had notified developers on April 22, 2026 — but because they overlapped with the unplanned outage, many users and developers likely faced difficulty distinguishing between error messages caused by the service disruption and errors caused by the sudden removal of familiar model aliases from the API .