Source hub

Deprecation and migration sources should connect official evidence to the pages built from it.

Official shutdown, migration, and replacement references behind lifecycle pages.

Review official pages Back to source directory

Current state

This source family now has a real hub instead of only scattered outbound links.

Live

Open the official references when you need source-of-record confirmation, then move directly into the internal pages built from the same source family.

Official sources

4

Linked internal pages

6

Primary provider

OpenAI

Official pages

The current official references in this source family.

These are the source-of-record pages that back the internal pages listed below.

Official source

OpenAI deprecations

Source of record for dated shutdown paths.

Open official page

Official source

Assistants guide

Migration source for Assistants replacement mapping.

Open official page

Official source

Responses migration guide

Source for the current migration path away from Assistants.

Open official page

Official source

Realtime guide

Migration source for beta-to-GA realtime changes.

Open official page

Linked pages

Internal pages that rely on this source category.

Open these when you want the editorial decision surface that sits on top of the source.

Provider hub

OpenAI

Provider hub for OpenAI pricing, hosted-tool costs, limits, and lifecycle risk.

OpenAIProviders

Provider category hub

OpenAI deprecations tracker

Provider-specific hub for OpenAI shutdown dates, migration briefs, and replacement paths.

OpenAIDeprecations / Migrations

Migration brief

Assistants API shutdown date

Shutdown-date brief for Assistants API with migration mapping and replacement path.

OpenAIDeprecations / Migrations

Migration brief

Realtime API beta shutdown

Shutdown-date brief for the Realtime beta interface and the current GA migration path.

OpenAIDeprecations / Migrations

Migration brief

Legacy GPT snapshots

Migration brief for dated legacy GPT snapshots and older preview aliases with a fixed cutoff.

OpenAIDeprecations / Migrations

Migration brief

GPT-4o preview audio and realtime models

Migration brief for dated preview audio and realtime model names moving to current families.

OpenAIDeprecations / Migrations

Continue the site

Keep moving through the decision from here.

Use the groups below to move laterally through the decision, not back out into another doc hunt.

Related pages

Stay in the same decision neighborhood instead of backing out to search.

Sources

Source hub directory that groups official evidence families and the internal pages built from them.

Deprecations / Migrations

Shutdown dates, migration paths, and replacement decisions grouped into live provider clusters.

OpenAI deprecations tracker

Provider-specific hub for OpenAI shutdown dates, migration briefs, and replacement paths.

Compare pages

Open the pages that turn this topic into a side-by-side decision.

Comparisons

Side-by-side model comparisons and scenario recommendation pages for cost-sensitive decisions.

GPT-5.4 vs GPT-5 mini

Side-by-side comparison of GPT-5.4 and GPT-5 mini across price, fit, and tool pressure.

Replacement pages

Use the likely substitutes, migration targets, or fallback choices as the next click.

Assistants API shutdown date

Shutdown-date brief for Assistants API with migration mapping and replacement path.

Realtime API beta shutdown

Shutdown-date brief for the Realtime beta interface and the current GA migration path.

Legacy GPT snapshots

Migration brief for dated legacy GPT snapshots and older preview aliases with a fixed cutoff.

Source category pages

Trace the source families behind this page instead of opening random docs in isolation.

Guide and API reference sources

Operational guides and API references used by tool-cost, migration, and calculator pages.

Changelog sources

Official changelog sources used to confirm whether a pricing or lifecycle change is current.

Pricing sources

Official pricing pages used to support model, tool-cost, and calculator estimates.