RETIRING IN 391 DAYS
Sunset scheduled for 2027-10-26, 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=2027-10-26 days_remaining=391 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-5.5
Vendor: openai. Tracked by 2 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| litellm | azure/eu/gpt-5.5 | 922,000 | 128,000 | $5.5 | $33 | 2027-10-26 |
| openrouter | openai/gpt-5.5 | 1,050,000 | 128,000 | $5 | $30 | — |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| high | modified | azure/eu/gpt-5.5: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure/gpt-5.5: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure/us/gpt-5.5: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| high | modified | azure_ai/gpt-5.5: context_tokens cut 1,050,000 to 922,000 | 2026-09-30 |
| low | modified | chatgpt/gpt-5.5: capabilities gained none_reasoning_effort, reasoning, xhigh_reasoning_effort | 2026-09-26 |
| info | repriced | global.openai.gpt-5.5: input_price_per_mtok $5.50/Mtok to $5.00/Mtok | 2026-09-24 |
| info | repriced | global.openai.gpt-5.5: output_price_per_mtok $33.00/Mtok to $30.00/Mtok | 2026-09-24 |
| info | repriced | global.openai.gpt-5.5: cache_read_price_per_mtok $0.55/Mtok to $0.50/Mtok | 2026-09-24 |
| low | added | new model global.openai.gpt-5.5 (1,000,000 ctx) | 2026-09-24 |
| low | added | new model us.openai.gpt-5.5 (1,000,000 ctx) | 2026-09-24 |
| low | modified | openrouter/openai/gpt-5.5: capabilities gained web_search | 2026-09-19 |
| low | added | new model aihubmix/gpt-5.5 (1,050,000 ctx) | 2026-09-16 |
| low | added | new model chatgpt/gpt-5.5 (1,050,000 ctx) | 2026-09-10 |
| low | added | new model openrouter/openai/gpt-5.5 (1,050,000 ctx) | 2026-09-06 |
| medium | deprecated | azure/eu/gpt-5.5: deprecation announced for 2027-10-26 — in 431 days | 2026-08-21 |
| medium | deprecated | azure/gpt-5.5: deprecation announced for 2027-10-26 — in 431 days | 2026-08-21 |
| medium | deprecated | azure/us/gpt-5.5: deprecation announced for 2027-10-26 — in 431 days | 2026-08-21 |
| medium | deprecated | azure_ai/gpt-5.5: deprecation announced for 2027-10-26 — in 431 days | 2026-08-21 |
| medium | deprecated | azure/eu/gpt-5.5: retires 2027-10-26 (in 431 days) | 2026-08-21 |
| medium | deprecated | azure/gpt-5.5: retires 2027-10-26 (in 431 days) | 2026-08-21 |
| medium | deprecated | azure/us/gpt-5.5: retires 2027-10-26 (in 431 days) | 2026-08-21 |
| medium | deprecated | azure_ai/gpt-5.5: retires 2027-10-26 (in 431 days) | 2026-08-21 |
| low | added | new model azure/eu/gpt-5.5 (1,050,000 ctx) | 2026-07-06 |
| low | added | new model azure/us/gpt-5.5 (1,050,000 ctx) | 2026-07-06 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure/gpt-5.5: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure_ai/gpt-5.5: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] gpt-5.5: capabilities lost service_tier | 2026-06-27 |
| low | added | new model azure_ai/gpt-5.5 (1,050,000 ctx) | 2026-06-17 |