U-M GPT Toolkit — Code Examples

A collection of code examples for accessing the U-M GPT Toolkit API service. For a full overview of AI services available at the University of Michigan, visit the U-M AI Services page.

Required parameters

Each example requires three parameters. These may be named slightly differently depending on the language or framework.

Parameter	Description
OPENAI_API_KEY	Your API key
OPENAI_API_BASE	The gateway base URL
MODEL	The model you want to use

Run Python/get_models.py to see the full list of available model names.

Endpoint compatibility

Not all models support every endpoint. Use the matrix below as a reference when choosing a model for your use case.

Model	Chat Completions	Responses API	Embeddings	Image Generation	Reasoning
gpt-4o	✅	✅	❌	❌	❌
gpt-4o-mini	✅	✅	❌	❌	❌
gpt-4.1	✅	✅	❌	❌	❌
gpt-4.1-mini	✅	✅	❌	❌	❌
gpt-4.1-nano	✅	✅	❌	❌	❌
gpt-5	✅	✅	❌	❌	✅
gpt-5-mini	✅	✅	❌	❌	✅
gpt-5.1	✅	✅	❌	❌	✅
gpt-5.2	✅	✅	❌	❌	✅
gpt-5.4	✅	✅	❌	❌	✅
gpt-5.5	✅	✅	❌	❌	✅
gpt-image-1.5	❌	❌	❌	✅	❌
gpt-image-2	❌	❌	❌	✅	❌
o1	✅	✅	❌	❌	✅
o3	✅	✅	❌	❌	✅
claude-haiku-4-5	✅	✅	❌	❌	❌
claude-sonnet-4-6	✅	✅	❌	❌	✅
claude-opus-4-6	✅	✅	❌	❌	✅
claude-opus-4-7	✅	✅	❌	❌	✅
gemini-3-flash-preview	✅	✅	❌	❌	✅
gemini-3-flash-image-preview	❌	❌	❌	✅	❌
Llama-4-Maverick-17B-128E-Instruct-FP8	✅	❌	❌	❌	❌
Llama-4-Scout-17B-16E-Instruct	✅	❌	❌	❌	❌
text-embedding-3-small	❌	❌	✅	❌	❌
text-embedding-3-large	❌	❌	✅	❌	❌

Note: This table reflects current gateway support and will be updated as new models and endpoints are added.

Examples by language

Language	Folder
Python	Python/
JavaScript	JavaScript/
curl	curl/
PowerShell	PowerShell/