Is Microsoft Azure AI Foundry GPT-4.1 nano deprecated?
Deprecated
Yes. GPT-4.1 nano is deprecated and Microsoft Azure AI Foundry shuts it down on 2026-10-14 — in ~3 months.
Lifecycle dates
- Status
- Deprecated
- Deprecation announced
- not announced
- Shutdown date
- (in ~3 months)
Pricing & context
- Input
- $0.10 / M tokens
- Output
- $0.40 / M tokens
- Context window
- 1M tokens
- Model maker
- OpenAI
Sources
- learn.microsoft.com https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
- prices.azure.com https://prices.azure.com/api/retail/prices?$filter=contains(meterName,'4.1%20nano')
- azure.microsoft.com https://azure.microsoft.com/en-us/pricing/details/cognitive-services/openai-service/
Verified against the source on . Dataset snapshot . Providers can change a date without notice — the link above is always the final word.
Common questions
- Is GPT-4.1 nano deprecated?
- Yes. GPT-4.1 nano is deprecated and Microsoft Azure AI Foundry shuts it down on 2026-10-14 — in ~3 months.
- When does GPT-4.1 nano shut down?
- Microsoft Azure AI Foundry has announced 2026-10-14 as the shutdown date for GPT-4.1 nano.
- What does GPT-4.1 nano cost?
- $0.10 per million input tokens and $0.40 per million output tokens, as last verified on 2026-07-18.
- What can I use instead of GPT-4.1 nano?
- Active alternatives from Microsoft Azure AI Foundry include GPT-5 nano, gpt-oss-120b, GPT-5.4 nano.