RETIRING IN 391 DAYS
Sunset scheduled for 2027-10-26, reported by a third-party catalog. The identifier still resolves today.
state=dying sunset=2027-10-26 days_remaining=391 severity=high 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-5.5-2026-04-23
Vendor: openai. Tracked by 1 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| litellm | azure/eu/gpt-5.5-2026-04-23 | 922,000 | 128,000 | $5.5 | $33 | 2027-10-26 |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| high | modified | azure/eu/gpt-5.5-2026-04-23: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure/gpt-5.5-2026-04-23: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure/us/gpt-5.5-2026-04-23: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure_ai/gpt-5.5-2026-04-23: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| medium | deprecated | azure/eu/gpt-5.5-2026-04-23: deprecation announced for 2027-10-26 — in 411 days | 2026-09-10 |
| medium | deprecated | azure/gpt-5.5-2026-04-23: deprecation announced for 2027-10-26 — in 411 days | 2026-09-10 |
| medium | deprecated | azure/us/gpt-5.5-2026-04-23: deprecation announced for 2027-10-26 — in 411 days | 2026-09-10 |
| medium | deprecated | azure/eu/gpt-5.5-2026-04-23: retires 2027-10-26 (in 411 days) | 2026-09-10 |
| medium | deprecated | azure/gpt-5.5-2026-04-23: retires 2027-10-26 (in 411 days) | 2026-09-10 |
| medium | deprecated | azure/us/gpt-5.5-2026-04-23: retires 2027-10-26 (in 411 days) | 2026-09-10 |
| low | added | new model azure/eu/gpt-5.5-2026-04-23 (1,050,000 ctx) | 2026-07-06 |
| low | added | new model azure/us/gpt-5.5-2026-04-23 (1,050,000 ctx) | 2026-07-06 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure/gpt-5.5-2026-04-23: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure_ai/gpt-5.5-2026-04-23: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] gpt-5.5-2026-04-23: capabilities lost service_tier | 2026-06-27 |
| low | added | new model azure_ai/gpt-5.5-2026-04-23 (1,050,000 ctx) | 2026-06-17 |