feat: Add list of supported models for AzureOpenAI generator components (#10881)

* feat: Add list of supported models for AzureOpenAI generator components

* Remove changes to legacy generator

Author: maxdswain

haystack/components/generators/chat/azure.py

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 import os
-from typing import Any
+from typing import Any, ClassVar
 
 from openai.lib._pydantic import to_strict_json_schema
 from openai.lib.azure import AsyncAzureADTokenProvider, AsyncAzureOpenAI, AzureADTokenProvider, AzureOpenAI
@@ -70,6 +70,44 @@ class AzureOpenAIChatGenerator(OpenAIChatGenerator):
     ```
     """
 
+    SUPPORTED_MODELS: ClassVar[list[str]] = [
+        "gpt-5.4",
+        "gpt-5.4-pro",
+        "gpt-5.3-codex",
+        "gpt-5.2",
+        "gpt-5.2-codex",
+        "gpt-5.2-chat",
+        "gpt-5.1",
+        "gpt-5.1-chat",
+        "gpt-5.1-codex",
+        "gpt-5.1-codex-mini",
+        "gpt-5",
+        "gpt-5-mini",
+        "gpt-5-nano",
+        "gpt-5-chat",
+        "gpt-4.1",
+        "gpt-4.1-mini",
+        "gpt-4.1-nano",
+        "gpt-4o",
+        "gpt-4o-mini",
+        "gpt-4o-audio-preview",
+        "gpt-realtime-1.5",
+        "gpt-audio-1.5",
+        "o1",
+        "o1-mini",
+        "o3",
+        "o3-mini",
+        "o4-mini",
+        "codex-mini",
+        "gpt-4",
+        "gpt-35-turbo",
+        "gpt-oss-120b",
+        "computer-use-preview",
+    ]
+    """A non-exhaustive list of chat models supported by this component.
+    See https://learn.microsoft.com/en-us/azure/foundry/foundry-models/concepts/models-sold-directly-by-azure
+    for the full list."""
+
     # ruff: noqa: PLR0913
     def __init__(
         self,

releasenotes/notes/azureopenaichat-list-models-39380916bcfbce73.yaml

@@ -0,0 +1,11 @@
+---
+features:
+  - |
+    ``AzureOpenAIChatGenerator`` now exposes a ``SUPPORTED_MODELS`` class variable listing supported model IDs, for example ``gpt-5-mini`` and ``gpt-4o``. To view all supported models go to the [API reference](https://docs.haystack.deepset.ai/reference/generators-api#azureopenaichatgenerator) or run:
+
+    .. code:: python
+
+      from haystack.components.generators.chat import AzureOpenAIChatGenerator
+      print(AzureOpenAIChatGenerator.SUPPORTED_MODELS)
+
+    We will add this for other model providers in their respective ChatGenerator components step by step.

test/components/generators/chat/test_azure.py

@@ -75,6 +75,13 @@ def tools():
 
 
 class TestAzureOpenAIChatGenerator:
+    def test_supported_models(self) -> None:
+        """SUPPORTED_MODELS is a non-empty list of strings."""
+        models = AzureOpenAIChatGenerator.SUPPORTED_MODELS
+        assert isinstance(models, list)
+        assert len(models) > 0
+        assert all(isinstance(m, str) for m in models)
+
     def test_init_default(self, monkeypatch):
         monkeypatch.setenv("AZURE_OPENAI_API_KEY", "test-api-key")
         component = AzureOpenAIChatGenerator(azure_endpoint="some-non-existing-endpoint")