Is o4-mini-2025-04-16 deprecated?

Q: Is o4-mini-2025-04-16 deprecated?

Not yet, but retirement is scheduled. Sunset scheduled for 2026-10-23, published in the provider's own documentation. The provider names gpt-5.6-terra as the replacement. The identifier still resolves today.

RETIRING IN 82 DAYS

Sunset scheduled for 2026-10-23, published in the provider's own documentation. The provider names gpt-5.6-terra as the replacement. The identifier still resolves today.

state=dying sunset=2026-10-23 days_remaining=82 severity=high sources=docs,litellm evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=gpt-5.6-terra corroborated=yes divergent_fields=none checked=2026-08-02 01:41Z

openai/o4-mini-2025-04-16

Vendor: openai. Tracked by 2 of 5 sources.

What each source reports

**endpoint** = the provider's own machine-readable API, the strongest evidence. **provider docs** = the provider's own documentation, read by a model — first-party content, inferred reading. Unlabelled rows are third-party catalogs. Where sources disagree both values are shown rather than silently reconciled.
Source	ID	Context	Max out	In $/Mtok	Out $/Mtok	Sunset
docs	o4-mini-2025-04-16	—	—	—	—	2026-10-23
litellm	azure/o4-mini-2025-04-16	200,000	100,000	$1.1	$4.4	—

Change history

Severity	Change	What	Detected
high	deprecated	o4-mini-2025-04-16: retires 2026-10-23 (in 83 days)	2026-08-01
low	added	new model o4-mini-2025-04-16	2026-08-01
info	modified	[source artifact — 6 providers changed identically on the same day] o4-mini-2025-04-16: capabilities lost service_tier	2026-06-27