RETIRING IN 152 DAYS
Sunset scheduled for 2027-04-01, published in the provider's own documentation. The provider names gpt-6-luna as the replacement. The identifier still resolves today. Sources disagree on: context_tokens.
state=dying sunset=2027-04-01 days_remaining=152 severity=high sources=docs,litellm,openrouter evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=gpt-6-luna corroborated=yes divergent_fields=context_tokens checked=2026-10-31 05:09Z
openai/gpt-5.4-nano
Vendor: openai. Tracked by 3 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| docs | gpt-5.4-nano | — | — | — | — | 2027-04-01 |
| litellm | azure/gpt-5.4-nano | 272,000 | 128,000 | $0.2 | $1.25 | 2027-04-01 |
| openrouter | openai/gpt-5.4-nano | 400,000 | 128,000 | $0.2 | $1.25 | — |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| low | added | new model zerogpu/gpt-5.4-nano (272,000 ctx) | 2026-10-28 |
| low | added | new model github_copilot/gpt-5.4-nano (272,000 ctx) | 2026-10-18 |
| critical | deprecated | gpt-5.4-nano: deprecation announced for 2026-10-01 (date already passed) | 2026-10-13 |
| medium | removed | [one catalog only — docs, litellm, openrouter still list it] openrouter/openai/gpt-5.4-nano is no longer listed by this source — calls to it are expected to fail | 2026-10-09 |
| medium | deprecated | gpt-5.4-nano: deprecation announced for 2027-04-01 — in 181 days | 2026-10-02 |
| low | added | new model gpt-5.4-nano | 2026-10-02 |
| medium | deprecated | gpt-5.4-nano: retires 2027-04-01 (in 181 days) | 2026-10-02 |
| low | modified | openai/gpt-5.4-nano: capabilities gained verbosity | 2026-10-01 |
| high | modified | openai/gpt-5.4-nano: capabilities lost verbosity | 2026-10-01 |
| low | modified | openai/gpt-5.4-nano: capabilities gained verbosity | 2026-09-30 |
| low | modified | openrouter/openai/gpt-5.4-nano: capabilities gained web_search | 2026-09-19 |
| low | modified | openrouter/openai/gpt-5.4-nano: context_tokens raised 272,000 to 400,000 | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5.4-nano: deprecation announced for 2027-09-21 — in 368 days | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5.4-nano: deprecation announced for 2027-09-21 — in 368 days | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5.4-nano: retires 2027-09-21 (in 368 days) | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5.4-nano: retires 2027-09-21 (in 368 days) | 2026-09-18 |
| low | added | new model azure/eu/gpt-5.4-nano | 2026-09-16 |
| low | added | new model azure/us/gpt-5.4-nano | 2026-09-16 |
| low | added | new model aihubmix/gpt-5.4-nano (400,000 ctx) | 2026-09-16 |
| low | added | new model openrouter/openai/gpt-5.4-nano (272,000 ctx) | 2026-09-06 |
| medium | deprecated | azure/gpt-5.4-nano: deprecation announced for 2027-09-21 — in 396 days | 2026-08-21 |
| medium | deprecated | azure_ai/gpt-5.4-nano: deprecation announced for 2027-09-21 — in 396 days | 2026-08-21 |
| medium | deprecated | azure/gpt-5.4-nano: retires 2027-09-21 (in 396 days) | 2026-08-21 |
| medium | deprecated | azure_ai/gpt-5.4-nano: retires 2027-09-21 (in 396 days) | 2026-08-21 |
| low | modified | azure/gpt-5.4-nano: capabilities gained none_reasoning_effort, xhigh_reasoning_effort | 2026-08-16 |
| high | modified | azure/gpt-5.4-nano: context_tokens cut 1,050,000 to 272,000 | 2026-07-30 |
| high | modified | azure_ai/gpt-5.4-nano: context_tokens cut 400,000 to 272,000 | 2026-07-30 |
| high | modified | gpt-5.4-nano: context_tokens cut 1,050,000 to 272,000 | 2026-07-30 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure/gpt-5.4-nano: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] azure_ai/gpt-5.4-nano: capabilities lost service_tier | 2026-06-27 |
| info | modified | [source artifact — 6 providers changed identically on the same day] gpt-5.4-nano: capabilities lost service_tier | 2026-06-27 |
| low | modified | gpt-5.4-nano: context_tokens raised 272,000 to 1,050,000 | 2026-06-26 |
| low | added | new model azure_ai/gpt-5.4-nano (400,000 ctx) | 2026-05-16 |