Deprecation notice: upcoming model shutdowns in 2026

In the previous reply, I revised to give a high-quality assurance pass to make sure every alias/pointer that is going to die is also useful for shutoff model gating, along with fine tuning models by the model’s end date.

After all other models are hit with shutoff - including as recent as gpt-4.1-nano fine-tunings (you can still train) shutoff in three months - I thought it would be interesting to see what still remains to chat with.

PERSISTED_MODELS: dict[str, dict[str, str | None]] = {
    # GPT-5.6 Family
    "gpt-5.6-sol":                          {"alias": "gpt-5.6"},
    "gpt-5.6-terra":                        {"alias": None},
    "gpt-5.6-luna":                         {"alias": None},
    # GPT-5.5 Family
    "gpt-5.5-2026-04-23":                   {"alias": "gpt-5.5"},
    "gpt-5.5-pro-2026-04-23":               {"alias": "gpt-5.5-pro"},
    "chat-latest":                          {"alias": None},
    # GPT-5.4 Family
    "gpt-5.4-2026-03-05":                   {"alias": "gpt-5.4"},
    "gpt-5.4-mini-2026-03-17":              {"alias": "gpt-5.4-mini"},
    "gpt-5.4-nano-2026-03-17":              {"alias": "gpt-5.4-nano"},
    "gpt-5.4-pro-2026-03-05":               {"alias": "gpt-5.4-pro"},
    # GPT-5.3 Codex
    "gpt-5.3-codex":                        {"alias": None},
    # GPT-5.2 Family
    "gpt-5.2-2025-12-11":                   {"alias": "gpt-5.2"},
    "gpt-5.2-pro-2025-12-11":               {"alias": "gpt-5.2-pro"},
    # GPT-5.1 (no pro)
    "gpt-5.1-2025-11-13":                   {"alias": "gpt-5.1"},
    # GPT-4.1 Family
    "gpt-4.1-2025-04-14":                   {"alias": "gpt-4.1"},  # with fine-tuning
    "gpt-4.1-mini-2025-04-14":              {"alias": "gpt-4.1-mini"},  # with fine-tuning
    # GPT-4o Family
    "gpt-4o-2024-11-20":                    {"alias": None},
    "gpt-4o-2024-08-06":                    {"alias": "gpt-4o"},  # with fine-tuning
    "gpt-4o-mini-2024-07-18":               {"alias": "gpt-4o-mini"},  # with fine-tuning
    # GPT-5 Search (chat completions web search)
    "gpt-5-search-api-2025-10-14":          {"alias": "gpt-5-search-api"},
}

OpenAI announced a bunch with three month notice, so this might not be a picture of the end of the year. They’ll probably kill 5.3-codex next with short notice.

Documentation: I also note that gpt-4o-search-preview-2025-03-11 to be shut off this month, for web search on chat completions where there are no internal tools, has an ineffective replacement in the documentation. It should be gpt-5-search-api - for however long that lasts - not gpt-5.4-mini