# AI model deprecations in September 2027

Updated 2026-10-31. Dates are effective deprecation dates, not announcement dates. Other versions or providers may still offer the model.

## Claude Haiku 5.5 — Azure AI Foundry

Scheduled for: 2027-09-29

- `azure_ai/claude-haiku-5-5`

## Claude Sonnet 5.5 — Azure AI Foundry

Scheduled for: 2027-09-29

- `azure_ai/claude-sonnet-5-5`

## GPT-5.4 Mini — Azure OpenAI

Scheduled for: 2027-09-21

- `azure/eu/gpt-5.4-mini`
- `azure/gpt-5.4-mini`
- `azure/gpt-5.4-mini-2026-03-17`
- `azure/us/gpt-5.4-mini`

## GPT-5.4 Mini — Azure AI Foundry

Scheduled for: 2027-09-21

- `azure_ai/gpt-5.4-mini`
- `azure_ai/gpt-5.4-mini-2026-03-17`

## GPT-5.4 Nano — Azure OpenAI

Scheduled for: 2027-09-21

- `azure/eu/gpt-5.4-nano`
- `azure/gpt-5.4-nano`
- `azure/gpt-5.4-nano-2026-03-17`
- `azure/us/gpt-5.4-nano`

## GPT-5.4 Nano — Azure AI Foundry

Scheduled for: 2027-09-21

- `azure_ai/gpt-5.4-nano`
- `azure_ai/gpt-5.4-nano-2026-03-17`

## Claude Opus 5.5 — Azure AI Foundry

Scheduled for: 2027-09-18

- `azure_ai/claude-opus-5-5`

## GPT OSS 120B — Azure AI Foundry

Scheduled for: 2027-09-15

- `azure_ai/gpt-oss-120b`

## Cohere Rerank V4.0 Fast — Azure AI Foundry

Scheduled for: 2027-09-13

- `azure_ai/cohere-rerank-v4.0-fast`

## Cohere Rerank V4.0 Pro — Azure AI Foundry

Scheduled for: 2027-09-13

- `azure_ai/cohere-rerank-v4.0-pro`

## GPT Live 1 — Azure OpenAI

Scheduled for: 2027-09-10

- `azure/gpt-live-1`

## GPT Image 2.5 Flare — Azure OpenAI

Scheduled for: 2027-09-09

- `azure/gpt-image-2.5-flare`

## GPT Image 2.5 Sunburst — Azure OpenAI

Scheduled for: 2027-09-09

- `azure/gpt-image-2.5-sunburst`

## GPT-5.4 Pro — Azure OpenAI

Scheduled for: 2027-09-07

- `azure/eu/gpt-5.4-pro`
- `azure/gpt-5.4-pro`
- `azure/gpt-5.4-pro-2026-03-05`
- `azure/us/gpt-5.4-pro`

## GPT-5.4 Pro — Azure AI Foundry

Scheduled for: 2027-09-07

- `azure_ai/gpt-5.4-pro`
- `azure_ai/gpt-5.4-pro-2026-03-05`

## GPT-5.4 — Azure OpenAI

Scheduled for: 2027-09-02

- `azure/eu/gpt-5.4`
- `azure/eu/gpt-5.4-2026-03-05`
- `azure/gpt-5.4`
- `azure/gpt-5.4-2026-03-05`
- `azure/us/gpt-5.4`
- `azure/us/gpt-5.4-2026-03-05`

## GPT-5.4 — Azure AI Foundry

Scheduled for: 2027-09-02

- `azure_ai/gpt-5.4`
- `azure_ai/gpt-5.4-2026-03-05`

## Claude Opus 4.8 — Azure AI Foundry

Scheduled for: 2027-09-01

- `azure_ai/claude-opus-4-8`