GPT-4o fully retired
GPT-4o removed from all plans effective April 3, 2026. GPT-5.4 is now the flagship,
with GPT-5.4 mini rolling out to Free and Go users.
Deprecated
GPT-Rosalind — frontier model for life sciences
New reasoning model optimized for biology, drug discovery, protein engineering, and genomics.
Targets research institutions and pharma. Deeper tool use for scientific workflows.
New ModelEnterprise
GPT-5.4-Cyber for defensive security
GPT-5.4 variant tuned for defensive cybersecurity — threat analysis, incident response, and detection.
Expanded API access for security teams.
New ModelSecurity
The Hacker News
Codex — major April update
Computer use (macOS apps: see, click, type) · In-app browser with inline commenting ·
90+ new plugins (Atlassian, CircleCI, GitLab, MS Suite, Neon, Remotion, Render) ·
Memory preview (preferences persist across sessions) ·
Scheduled tasks (Codex can wake itself up to continue multi-day work) ·
Proactive suggestions at session start.
New FeaturesDev Tools
OpenAI
Workspace Agents — Codex-powered team agents in ChatGPT
Teams can build shared agents for complex, persistent tasks — described as "an evolution of GPTs."
New FeatureEnterprise