Microsoft Foundry / Azure OpenAI · model
claude-opus-4-1 deprecation: shutdown date & replacement
Shut down August 5, 2026
- Provider
- Microsoft Foundry / Azure OpenAI
- Type
- model
- Announced
- —
- Shutdown
- Replacement
claude-opus-5- Source
- Official Microsoft Foundry / Azure OpenAI notice
Azure lifecycle stage: Retired.
How to migrate off claude-opus-4-1
- Find every place that references it:
grep -rn --exclude-dir={node_modules,.git,dist} "claude-opus-4-1" . - Replace the model ID:
- model: "claude-opus-4-1" + model: "claude-opus-5" - Re-run your evals or a sample of real prompts — output style, token usage and pricing can change between models.
- Check config outside code too: environment variables, feature flags, prompt-management tools, and fine-tuned model references.
- Deploy before August 5, 2026, and add the CI scanner so it cannot come back.
Questions
Is claude-opus-4-1 deprecated?
Yes. Microsoft Foundry / Azure OpenAI has deprecated claude-opus-4-1. It was shut down on August 5, 2026.
When does claude-opus-4-1 shut down?
August 5, 2026, according to Microsoft Foundry / Azure OpenAI's official deprecation notice.
What should I use instead of claude-opus-4-1?
Microsoft Foundry / Azure OpenAI recommends claude-opus-5. Switch the model ID and re-test your prompts, since outputs, pricing and limits can differ.
What happens to requests to claude-opus-4-1 after the shutdown?
Requests using the retired model ID fail with an error, so any code still calling it breaks. Update and deploy before the shutdown date.