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OpenAI o1-mini Deprecation, Shutdown Dates & Migration Guide

Runs locally in your browser — 0 bytes uploaded Synced 2026-11-12 UTC · 2 variants · 2 ecosystems

Track confirmed UTC deprecation and shutdown dates for OpenAI o1-mini (OpenAI) across OpenAI, Azure OpenAI. Preview o1-mini → o4-mini upgrades locally below, audit full configs in the Model Config Auditor, or benchmark token pricing in DevToken.

Tracked Variants 2
Earliest Upcoming EOL 2025-10-27
Recommended Upgrade o4-mini
Ecosystems Covered OpenAI, Azure OpenAI

1. Quick .env & SDK Snippet Replacement Matcher

Edit or paste your .env assignment, LiteLLM route, or SDK model identifier below to check live 3-state EOL status and copy a ready-to-apply replacement diff locally in your browser.

1 of 2 configured models need migration
Full .env Auditor → Compare o4-mini Cost in DevToken →

Replacement Diff Preview (o1-mini → o4-mini)

# OPENAI_MODEL: o1-mini -> o4-mini [RETIRED · EOL 2025-10-27]
- OPENAI_MODEL="o1-mini"
+ OPENAI_MODEL="o4-mini"

# AZURE_OPENAI_DEPLOYMENT: o1-mini (2024-09-12) -> o4-mini [ACTIVE]
- AZURE_OPENAI_DEPLOYMENT="o1-mini (2024-09-12)"
+ AZURE_OPENAI_DEPLOYMENT="o4-mini"

2. Cross-Ecosystem OpenAI o1-mini Lifecycle Matrix (2)

Direct vendor APIs and cloud platforms retire dated snapshots on independent schedules. Verify the exact model ID, vendor lifecycle stage, and UTC shutdown date matching your deployment.

OpenAI o1-mini lifecycle status, UTC shutdown dates, and replacement models across OpenAI, Azure OpenAI
Model ID Provider Calculated Status Confirmed Shutdown (UTC) Vendor Lifecycle Replacement & Migration Source
o1-mini OpenAI RETIRED 2025-10-27381d ago Retired
o4-mini Cost → Audit →
Docs ↗
o1-mini (2024-09-12) Azure OpenAI ACTIVE No EOL Supported — —

3. Production Migration Checklist (o1-mini → o4-mini)

Follow this deterministic engineering sequence before retiring pinned snapshots in production services and SDK clients:

  1. Inventory pinned model IDs: Search repositories and deployment manifests for OPENAI_MODEL, openai/ LiteLLM routes, and dated snapshot strings in the OpenAI o1-mini family (0 deprecated, 1 retired, 1 active variants tracked).
  2. Benchmark successor quality & token pricing: Validate structured output schemas, tool-calling payloads, and latency against o4-mini, then compare input, output, and cached token rates in DevToken.
  3. Enforce keyless CI guardrails: Wire RSS, Atom, iCal feeds & CI Guard into pull-request checks so retired or deprecated OpenAI o1-mini identifiers cannot re-enter production.

Compare sibling model families or inspect full provider-level schedules across every ecosystem hosting this family:

5. OpenAI o1-mini Deprecation & Upgrade FAQ

Is OpenAI o1-mini deprecated or retired across OpenAI, Azure OpenAI?

LLMEOL tracks 2 OpenAI o1-mini variants across OpenAI, Azure OpenAI: 0 deprecated with scheduled shutdowns, 1 retired past their UTC EOL date, and 1 active with no announced shutdown date. Check the cross-ecosystem matrix above for exact snapshot dates.

What is the recommended replacement model when migrating off o1-mini?

The primary recommended upgrade target for o1-mini is o4-mini. Always test prompt formatting, max output tokens, and tool schemas on o4-mini, and compare token pricing in DevToken before switching production traffic.

How can I replace o1-mini in .env and LiteLLM configs safely?

Paste your OPENAI_MODEL assignment or LiteLLM model block into the Quick Replacement Matcher on this page to generate an exact diff, or open the full Local Model Config Auditor to scan multi-service manifests with zero network upload.