isitdeprecated.com
collectors 5/5 ok last sync state ok models 2,715 events 12,893

RETIRING IN 227 DAYS

Sunset scheduled for 2027-05-15, reported by a third-party catalog. The identifier still resolves today. Sources disagree on: context_tokens, input_price_per_mtok, output_price_per_mtok.

state=dying sunset=2027-05-15 days_remaining=227 severity=high sources=litellm,openrouter evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=yes divergent_fields=context_tokens,input_price_per_mtok,output_price_per_mtok checked=2026-09-30 15:40Z

openai/gpt-5.1

Vendor: openai. Tracked by 2 of 5 sources.

What each source reports

SourceIDContext Max outIn $/Mtok Out $/MtokSunset
litellmazure/eu/gpt-5.1272,000128,000$1.375$112027-05-15
openrouteropenai/gpt-5.1400,000128,000$1.25$10—
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.

Change history

SeverityChangeWhat Detected
lowmodifiedopenrouter/openai/gpt-5.1: capabilities gained web_search2026-09-19
lowmodifiedopenrouter/openai/gpt-5.1: context_tokens raised 272,000 to 400,0002026-09-18
inforepricedazure/eu/gpt-5.1: input_price_per_mtok $1.38/Mtok to $1.38/Mtok2026-09-16
inforepricedazure/eu/gpt-5.1: cache_read_price_per_mtok $0.14/Mtok to $0.14/Mtok2026-09-16
inforepricedazure/us/gpt-5.1: input_price_per_mtok $1.38/Mtok to $1.38/Mtok2026-09-16
inforepricedazure/us/gpt-5.1: cache_read_price_per_mtok $0.14/Mtok to $0.14/Mtok2026-09-16
highmodifiedgpt-5.1: capabilities lost minimal_reasoning_effort2026-09-11
lowaddednew model openrouter/openai/gpt-5.1 (272,000 ctx)2026-09-06
lowaddednew model azure/us-gov/gpt-5.1 (272,000 ctx)2026-09-03
mediumdeprecatedazure/eu/gpt-5.1: deprecation announced for 2027-05-15 — in 267 days2026-08-21
mediumdeprecatedazure/global/gpt-5.1: deprecation announced for 2027-05-15 — in 267 days2026-08-21
mediumdeprecatedazure/gpt-5.1: deprecation announced for 2027-05-15 — in 267 days2026-08-21
mediumdeprecatedazure/us/gpt-5.1: deprecation announced for 2027-05-15 — in 267 days2026-08-21
mediumdeprecatedazure/eu/gpt-5.1: retires 2027-05-15 (in 267 days)2026-08-21
mediumdeprecatedazure/global/gpt-5.1: retires 2027-05-15 (in 267 days)2026-08-21
mediumdeprecatedazure/gpt-5.1: retires 2027-05-15 (in 267 days)2026-08-21
mediumdeprecatedazure/us/gpt-5.1: retires 2027-05-15 (in 267 days)2026-08-21
infomodified[source artifact — 6 providers changed identically on the same day] gpt-5.1: capabilities lost service_tier2026-06-27