o3-deep-research

DeprecatedOpenAIopenai/o3-deep-research2 platforms

What breaks Add its dates to my calendar

Shutting down. o3-deep-research shuts down on Azure AI Foundry on Nov 19, 2026. OpenAI names GPT-5.6 Sol as the replacement.

36 days

Next shutdown: 36 daysNov 19, 2026 · Azure AI Foundry
Context window: 200KMax output 100K tokens
Released: Jun 24, 2025OpenAI

Dates on every platform

2 listings · a floor is the earliest possible date

o3-deep-research on each platform: model ID, status, dates, replacement and source
Platform	Model ID and status	Deprecated	Shuts down	Replacement
OpenAI APIOpenAI: Deprecations (opens in a new tab) · checked Oct 14, 2026	`o3-deep-research-2025-06-26`Shut down · also o3-deep-research	Apr 22, 2026	Jul 23, 2026Shut down	GPT-5.6 Sol
Azure AI FoundryMicrosoft: Model retirement schedule - Microsoft Foundry (opens in a new tab) · checked Oct 14, 2026	`o3-deep-research:2025-06-26`Deprecated	–	Nov 19, 202636 days	GPT-5.6 Sol

Deprecated on Azure: only subscriptions that have already deployed this version can create new deployments.

Standard, Global Standard and Data Zone Standard deployments are upgraded to the replacement at retirement unless versionUpgradeOption is NoAutoUpgrade. Provisioned deployments are not upgraded and must be moved by hand.

What breaks when you move off o3-deep-research

Behavior
Standard, Global Standard and Data Zone Standard deployments are upgraded to the replacement automatically unless versionUpgradeOption is NoAutoUpgrade. Provisioned deployments are not upgraded and stop working at retirement.
o1, o1-pro, o3, o3-deep-research, o3-mini, o3-pro, o4-mini · Azure AI Foundry · Nov 19, 2026
Availability
Inference requests to retired deployments return 410 Gone.
o1, o1-pro, o3, o3-deep-research, o3-mini, o3-pro, o4-mini · Azure AI Foundry · Nov 19, 2026

List prices

$ per 1M tokens, with each price’s source

List prices per 1M tokens, in US dollars
Platform	Input	Cached	Output	In effect	Source
Azure AI Foundry`o3-deep-research:2025-06-26`	$10.00	$2.50	$40.00	Jul 1, 2025Current · Global Standard rate from the US East 2 price list.	Microsoft: Azure Retail Prices API (Foundry Models, US East 2) (opens in a new tab)

Change history

Nov 19, 2026Shutdowno1, o3 and o4-mini models retire on Azure AI FoundryAzure AI Foundry2 breaks

o1, o1-pro, o3, o3-deep-research, o3-mini, o3-pro and o4-mini are deprecated and retire on Foundry. Microsoft lists gpt-5.6-sol as the replacement, or gpt-5.6-terra for o3-mini and o4-mini.

Platform: Azure AI Foundry
Models: o1, o1-pro, o3, o3-deep-research, o3-mini, o3-pro, o4-mini

BehaviorStandard, Global Standard and Data Zone Standard deployments are upgraded to the replacement automatically unless versionUpgradeOption is NoAutoUpgrade. Provisioned deployments are not upgraded and stop working at retirement.
AvailabilityInference requests to retired deployments return 410 Gone.

Source: Microsoft, Model retirement schedule - Microsoft Foundry (opens in a new tab); Microsoft, Microsoft Foundry Models lifecycle and support policy (opens in a new tab)

Jul 23, 2026ShutdownCodex, chat, search, deep research and computer-use snapshots shut down on the OpenAI APIOpenAI API

OpenAI shut down the GPT-5, GPT-5.1 and GPT-5.2 Codex models, the GPT-5 and GPT-5.1 chat snapshots, the GPT-4o search previews, computer-use-preview and the o3 and o4-mini deep research models. It names GPT-5.6 Sol or GPT-5.6 Terra as the substitute for each.

Platform: OpenAI API
Models: computer-use-preview, GPT-4o Search Preview, GPT-4o Mini Search Preview, GPT-5 Chat, GPT-5-Codex, GPT-5.1 Chat, GPT-5.1-Codex, GPT-5.1-Codex-Max, GPT-5.1-Codex Mini, GPT-5.2-Codex, o3-deep-research, o4-mini-deep-research
Announced: Apr 22, 2026

Source: OpenAI, Deprecations (opens in a new tab)