Summary
Three OpenAI dated model snapshots have confirmed shutdown dates on OpenAI's deprecation page but are missing deprecation_date in model_list.json. Without the field, markModelsPastDeprecationDate() in packages/proxy/schema/models.ts will not auto-flag them as deprecated after the shutdown date.
A fourth model (gpt-5-nano-2025-08-07) is also affected with the same shutdown date but is omitted from this issue to stay within the 3-model limit.
Affected Models
| Model ID |
Shutdown Date |
Replacement |
Line |
gpt-5-2025-08-07 |
2026-12-11 |
gpt-5.5 |
~485 |
o3-2025-04-16 |
2026-12-11 |
gpt-5.5 |
~1695 |
gpt-5-mini-2025-08-07 |
2026-12-11 |
gpt-5.4-mini |
~502 |
All three models are currently active but have been announced for retirement on December 11, 2026.
Also affected (same shutdown date):
gpt-5-nano-2025-08-07 (line ~519) — shutdown 2026-12-11, replacement gpt-5.4-nano
Verification
Cross-source confirmation: all models appear on both the OpenAI models page (as active) and the deprecation page (with shutdown dates). The deprecation page lists the exact shutdown date of December 11, 2026 for each.
Local files inspected
packages/proxy/schema/model_list.json — all entries lack deprecation_datepackages/proxy/schema/models.ts — markModelsPastDeprecationDate() (line 217) requires deprecation_date per entry
Proposed changes
"gpt-5-2025-08-07": {
"deprecation_date": "2026-12-11"
}"o3-2025-04-16": {
"deprecation_date": "2026-12-11"
}"gpt-5-mini-2025-08-07": {
"deprecation_date": "2026-12-11"
}{
"kind": "deprecation",
"provider": "openai",
"models": ["gpt-5-2025-08-07", "o3-2025-04-16", "gpt-5-mini-2025-08-07"],
"status": "deprecated",
"model_specs": {
"gpt-5-2025-08-07": {
"deprecation_date": "2026-12-11"
},
"o3-2025-04-16": {
"deprecation_date": "2026-12-11"
},
"gpt-5-mini-2025-08-07": {
"deprecation_date": "2026-12-11"
}
},
"source_urls": [
"https://platform.openai.com/docs/deprecations",
"https://platform.openai.com/docs/models"
]
}
Summary
Three OpenAI dated model snapshots have confirmed shutdown dates on OpenAI's deprecation page but are missing
deprecation_dateinmodel_list.json. Without the field,markModelsPastDeprecationDate()inpackages/proxy/schema/models.tswill not auto-flag them as deprecated after the shutdown date.A fourth model (
gpt-5-nano-2025-08-07) is also affected with the same shutdown date but is omitted from this issue to stay within the 3-model limit.Affected Models
gpt-5-2025-08-07gpt-5.5o3-2025-04-16gpt-5.5gpt-5-mini-2025-08-07gpt-5.4-miniAll three models are currently active but have been announced for retirement on December 11, 2026.
Also affected (same shutdown date):
gpt-5-nano-2025-08-07(line ~519) — shutdown 2026-12-11, replacementgpt-5.4-nanoVerification
model_list.jsonCross-source confirmation: all models appear on both the OpenAI models page (as active) and the deprecation page (with shutdown dates). The deprecation page lists the exact shutdown date of December 11, 2026 for each.
Local files inspected
packages/proxy/schema/model_list.json— all entries lackdeprecation_datepackages/proxy/schema/models.ts—markModelsPastDeprecationDate()(line 217) requiresdeprecation_dateper entryProposed changes
{ "kind": "deprecation", "provider": "openai", "models": ["gpt-5-2025-08-07", "o3-2025-04-16", "gpt-5-mini-2025-08-07"], "status": "deprecated", "model_specs": { "gpt-5-2025-08-07": { "deprecation_date": "2026-12-11" }, "o3-2025-04-16": { "deprecation_date": "2026-12-11" }, "gpt-5-mini-2025-08-07": { "deprecation_date": "2026-12-11" } }, "source_urls": [ "https://platform.openai.com/docs/deprecations", "https://platform.openai.com/docs/models" ] }