RETIRING IN 41 DAYS
Sunset scheduled for 2026-12-11, published in the provider's own documentation. The provider names gpt-5.6-luna as the replacement. The identifier still resolves today. Sources disagree on: context_tokens.
state=dying sunset=2026-12-11 days_remaining=41 severity=high sources=docs,litellm,openrouter evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=gpt-5.6-luna corroborated=yes divergent_fields=context_tokens checked=2026-10-31 05:09Z
openai/gpt-5-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-nano | — | — | — | — | 2026-12-11 |
| litellm | azure/gpt-5-nano | 272,000 | 128,000 | $0.05 | $0.4 | 2026-12-11 |
| openrouter | openai/gpt-5-nano | 400,000 | 128,000 | $0.05 | $0.4 | — |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| high | deprecated | gpt-5-nano: deprecation announced for 2026-12-11 — in 44 days | 2026-10-28 |
| low | added | new model gpt-5-nano | 2026-10-23 |
| high | deprecated | gpt-5-nano: retires 2026-12-11 (in 49 days) | 2026-10-23 |
| medium | removed | [one catalog only — litellm, openrouter still list it] openrouter/openai/gpt-5-nano is no longer listed by this source — calls to it are expected to fail | 2026-10-09 |
| low | modified | openai/gpt-5-nano: capabilities gained verbosity | 2026-10-01 |
| high | modified | openai/gpt-5-nano: capabilities lost verbosity | 2026-10-01 |
| low | modified | openai/gpt-5-nano: capabilities gained verbosity | 2026-09-30 |
| low | modified | openrouter/openai/gpt-5-nano: capabilities gained web_search | 2026-09-19 |
| low | modified | openrouter/openai/gpt-5-nano: context_tokens raised 272,000 to 400,000 | 2026-09-18 |
| low | modified | openrouter/openai/gpt-5-nano: capabilities gained function_calling, pdf_input, prompt_caching, response_schema, vision | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5-nano: deprecation announced for 2027-02-09 — in 144 days | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5-nano: deprecation announced for 2027-02-09 — in 144 days | 2026-09-18 |
| medium | deprecated | azure/eu/gpt-5-nano: retires 2027-02-09 (in 144 days) | 2026-09-18 |
| medium | deprecated | azure/us/gpt-5-nano: retires 2027-02-09 (in 144 days) | 2026-09-18 |
| low | added | new model azure/eu/gpt-5-nano | 2026-09-16 |
| low | added | new model azure/us/gpt-5-nano | 2026-09-16 |
| medium | deprecated | azure/gpt-5-nano: deprecation announced for 2027-02-09 — in 172 days | 2026-08-21 |
| medium | deprecated | azure/gpt-5-nano: retires 2027-02-09 (in 172 days) | 2026-08-21 |