gpt-5.3-codex - Mint Starter Kit

gpt-5.3-codex is available through the OpenAI-compatible Responses API. It is suitable for coding workflows, software engineering agents, code understanding, and implementation planning.

Create or copy your API key from the console before calling the API. Use the model unit price displayed in the console as the source of truth.

Endpoint

Compatibility	Base URL
OpenAI-compatible	`https://llm.gpuhub.com/api/v1`

curl

curl --location --request POST "https://llm.gpuhub.com/api/v1/responses" \
  --header "Authorization: Bearer $API_KEY" \
  --header "Content-Type: application/json" \
  --data-raw '{
    "model": "gpt-5.3-codex",
    "input": "Hello! Help me refactor this function."
  }'

Python

# Install the SDK first if needed:
# pip install openai

from openai import OpenAI

client = OpenAI(
    base_url="https://llm.gpuhub.com/api/v1",
    api_key="YOUR_API_KEY",
)

response = client.responses.create(
    model="gpt-5.3-codex",
    input="Hello! Help me refactor this function.",
)

print(response.output_text)

Use with Cherry Studio

To use this model in Cherry Studio, configure the matching provider type and add the model name shown on this page. See Cherry Studio for setup details.