Use GPT-4 with free credit — no card needed
CheaperLLM gives you an OpenAI-compatible API key that routes to OpenAI GPT-4 models. Sign up free, get credit, start building.
Python — change the model to access Claude, Gemini, and 600+ others instantly
from openai import OpenAI
client = OpenAI(
base_url="https://api.cheaperllm.com/v1",
api_key="YOUR_CHEAPERLLM_KEY",
)
response = client.chat.completions.create(
model="gpt-4o",
messages=[{"role": "user", "content": "Hello from GPT-4o via CheaperLLM!"}],
)
print(response.choices[0].message.content)
OpenAI GPT-4 models available
All accessible with your single CheaperLLM key.
GPT-4o
Multimodal, vision-capable, fast
GPT-4.1
Latest generation, high intelligence
GPT-4o Mini
Fast and affordable
o3 Mini
Advanced reasoning
✓ Free AI credit on signup
✓ No card needed
✓ OpenAI-compatible
✓ Secured by Stripe
✓ Cancel anytime
Frequently asked questions
Is there a free GPT-4 API?
CheaperLLM gives you free credit on signup so you can try GPT-4o and other OpenAI models at no cost.
Do I need an OpenAI account?
No. One CheaperLLM key gives you access to GPT-4, Claude, Gemini, and 600+ models.
Is it fully OpenAI-compatible?
Yes. It uses the same SDK and endpoint format as the official OpenAI API.