RETIRING IN 380 DAYS
Sunset scheduled for 2027-10-01, published in the provider's own documentation. The identifier still resolves today.
state=dying sunset=2027-10-01 days_remaining=380 severity=high sources=docs,litellm,openrouter evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=none corroborated=yes divergent_fields=none checked=2026-09-16 03:02Z
openai/gpt-4o
Vendor: openai. Tracked by 3 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| docs | gpt-4o | — | — | — | — | 2027-10-01 |
| litellm | azure/gpt-4o | 128,000 | 16,384 | $2.5 | $10 | — |
| openrouter | openai/gpt-4o | 128,000 | 16,384 | $2.5 | $10 | — |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| low | modified | openrouter/openai/gpt-4o: max_output_tokens raised 4,096 to 16,384 | 2026-09-06 |
| low | modified | openrouter/openai/gpt-4o: capabilities gained prompt_caching | 2026-09-06 |
| info | repriced | openrouter/openai/gpt-4o: cache_read_price_per_mtok n/a to $1.25/Mtok | 2026-09-06 |
| high | deprecated | gpt-4o: retirement announced for 2026-10-01 — in 57 days | 2026-08-05 |
| high | deprecated | gpt-4o: retires 2026-10-01 (in 57 days) | 2026-08-05 |
| medium | deprecated | gpt-4o: retirement announced for 2027-10-01 — in 421 days | 2026-08-05 |
| medium | deprecated | gpt-4o: retires 2027-10-01 (in 426 days) | 2026-08-01 |
| low | added | new model gpt-4o | 2026-08-01 |
| medium | removed | [one catalog only — docs, litellm, openrouter still list it] gpt-4o is no longer listed by this source — calls to it are expected to fail | 2026-08-01 |
| info | modified | [source artifact — 6 providers changed identically on the same day] gpt-4o: capabilities lost service_tier | 2026-06-27 |