Azure OpenAI exposes GPT-4.5 through model ID gpt-4-5. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.
Last refreshed 2026-05-20. Next refresh: weekly.
Quick Start
- 1
- 2
Code Examples
Install
pip install openaiAPI key
AZURE_OPENAI_API_KEYModel ID
gpt-4-5gpt-4-5 is your Azure deployment name, not the underlying model name. Deployment names are set when you deploy a model in Azure AI Foundry / Azure OpenAI Studio.
import os
from openai import AzureOpenAI
client = AzureOpenAI(
azure_endpoint=os.environ["AZURE_OPENAI_ENDPOINT"], # e.g. https://{resource}.openai.azure.com
api_key=os.environ["AZURE_OPENAI_API_KEY"],
api_version="2024-02-01"
)
response = client.chat.completions.create(
model="gpt-4-5", # your deployment name
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Pricing on Azure OpenAI
Capabilities
VisionMultimodalJSON / Tool useStructured OutputsCode ExecutionFine-tuning
About GPT-4.5
Improved GPT-4 variant released March 2026. Enhanced performance over GPT-4o with better reasoning and code generation.
Model Specs
Released2025-02-27
Context8k
Knowledge cutoff2025-04