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OpenAI o1 & o1-pro Deprecation, Shutdown Dates & Migration Guide

Runs locally in your browser — 0 bytes uploaded Synced 2026-11-12 UTC · 7 variants · 2 ecosystems

Track confirmed UTC deprecation and shutdown dates for OpenAI o1 & o1-pro (OpenAI) across OpenAI, Azure OpenAI. Preview o1-2024-12-17 → gpt-5.6-sol upgrades locally below, audit full configs in the Model Config Auditor, or benchmark token pricing in DevToken.

Tracked Variants 7
Earliest Upcoming EOL 2026-11-19
Recommended Upgrade gpt-5.6-sol
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.

2 of 2 configured models need migration
Full .env Auditor → Compare gpt-5.6-sol Cost in DevToken →

Replacement Diff Preview (o1-2024-12-17 → gpt-5.6-sol)

# OPENAI_MODEL: o1-2024-12-17 -> gpt-5.6-sol [RETIRED · EOL 2026-10-23]
- OPENAI_MODEL="o1-2024-12-17"
+ OPENAI_MODEL="gpt-5.6-sol"

# AZURE_OPENAI_DEPLOYMENT: o1 (2024-12-17) -> gpt-5.6-sol [DEPRECATED · EOL 2026-11-19]
- AZURE_OPENAI_DEPLOYMENT="o1 (2024-12-17)"
+ AZURE_OPENAI_DEPLOYMENT="gpt-5.6-sol"

2. Cross-Ecosystem OpenAI o1 & o1-pro Lifecycle Matrix (7)

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 & o1-pro 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 (2024-12-17) Azure OpenAI DEPRECATED (7d) 2026-11-19in 7d Deprecated
gpt-5.6-sol Cost → Audit →
Docs ↗
o1-pro (2025-03-19) Azure OpenAI DEPRECATED (7d) 2026-11-19in 7d Deprecated
gpt-5.6-sol Cost → Audit →
Docs ↗
o1 OpenAI RETIRED 2026-10-2320d ago Retired
gpt-5.6-sol Cost → Audit →
Docs ↗
o1-2024-12-17 OpenAI RETIRED 2026-10-2320d ago Retired
gpt-5.6-sol Cost → Audit →
Docs ↗
o1-pro OpenAI RETIRED 2026-10-2320d ago Retired
gpt-5.6-sol (reasoning.mode: pro) Cost → Audit →
Docs ↗
o1-pro-2025-03-19 OpenAI RETIRED 2026-10-2320d ago Retired
gpt-5.6-sol (reasoning.mode: pro) Cost → Audit →
Docs ↗
o1-preview OpenAI RETIRED 2025-07-28472d ago Retired
o3 Cost → Audit →
Docs ↗

3. Production Migration Checklist (o1-2024-12-17 → gpt-5.6-sol)

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 & o1-pro family (2 deprecated, 5 retired, 0 active variants tracked).
  2. Benchmark successor quality & token pricing: Validate structured output schemas, tool-calling payloads, and latency against gpt-5.6-sol, 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 & o1-pro identifiers cannot re-enter production.

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

5. OpenAI o1 & o1-pro Deprecation & Upgrade FAQ

Is OpenAI o1 & o1-pro deprecated or retired across OpenAI, Azure OpenAI?

LLMEOL tracks 7 OpenAI o1 & o1-pro variants across OpenAI, Azure OpenAI: 2 deprecated with scheduled shutdowns, 5 retired past their UTC EOL date, and 0 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 o1-2024-12-17?

The primary recommended upgrade target for o1-2024-12-17 is gpt-5.6-sol. Always test prompt formatting, max output tokens, and tool schemas on gpt-5.6-sol, and compare token pricing in DevToken before switching production traffic.

How can I replace o1-2024-12-17 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.