Is gpt-oss-20b-maas deprecated?

Q: Is gpt-oss-20b-maas deprecated?

Not yet, but retirement is scheduled. Sunset scheduled for 2026-10-21, reported by a third-party catalog. The identifier still resolves today.

RETIRING IN 21 DAYS

Sunset scheduled for 2026-10-21, reported by a third-party catalog. The identifier still resolves today.

state=dying sunset=2026-10-21 days_remaining=21 severity=critical sources=litellm evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=single-source divergent_fields=none checked=2026-09-30 15:40Z

openai/gpt-oss-20b-maas

Vendor: openai. Tracked by 1 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
litellm	vertex_ai/openai/gpt-oss-20b-maas	131,072	32,768	$0.07	$0.25	2026-10-21

Change history

Severity	Change	What	Detected
critical	deprecated	vertex_ai/openai/gpt-oss-20b-maas: deprecation announced for 2026-10-21 — in 27 days	2026-09-24
critical	deprecated	vertex_ai/openai/gpt-oss-20b-maas: retires 2026-10-21 (in 27 days)	2026-09-24
info	repriced	vertex_ai/openai/gpt-oss-20b-maas: input_price_per_mtok $0.07/Mtok to $0.07/Mtok	2026-09-13
info	repriced	vertex_ai/openai/gpt-oss-20b-maas: output_price_per_mtok $0.30/Mtok to $0.25/Mtok	2026-09-13
info	repriced	vertex_ai/openai/gpt-oss-20b-maas: cache_read_price_per_mtok n/a to $0.0070/Mtok	2026-09-13