OpenAI API Changelog — Monitored by APIDrift
Total Changes
176
Breaking (90d)
2
Deprecations (90d)
2
Last Updated
Oct 28, 2026
Recent Changes
New FeatureAdd prompt cache breakpoint TTL options
Oct 28, 2026New FeatureNew GPT-6.1-Terra model, delegation controls, and prompt cache lifetimes added
Oct 27, 2026BreakingDecisions API breaking change: `instructions` type expanded, new message roles
Oct 23, 2026173 more changes in the last 30 days.
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