Short answer: CheapAI gives you OpenAI-compatible access to o1-preview, GPT-4o Codex, and GPT-4o mini at up to 65% below OpenAI's official per-token pricing. You swap one base URL in your existing code or tool — no SDK changes, no account setup. Delivery within 24 hours, paid with crypto, fully guaranteed.
GPT API pricing — CheapAI vs OpenAI official
Official OpenAI prices sourced from openai.com/api/pricing. Checked March 2026. CheapAI prices are fixed plan rates — see plan cards below for exact figures.
| CheapAI Model | Official Equivalent | Official Input | Official Output | CheapAI Discount |
|---|---|---|---|---|
| o1-preview* | o1-preview | $15.00/1M | $60.00/1M | Up to 65% off |
| GPT-4o Codex* | GPT-4o | $2.50/1M | $10.00/1M | Up to 65% off |
| GPT-4o mini* | GPT-4o mini | $0.15/1M | $0.60/1M | Up to 65% off |
* CheapAI utilizes simplified marketing tier names (5.4/5.3) to represent generational capabilities. These route securely to the Official Equivalent OpenAI models listed above. Official rates are sourced directly from openai.com/api/pricing as of March 2026. CheapAI discounts apply via volume aggregation pricing. See exact plan pricing.
Who is this for?
o1-preview is natively supported in Cursor. CheapAI lets you use it at a fraction of the cost with a one-line base URL swap. Setup guide →
GPT-4o Codex and GPT-4o mini are the best choices for running OpenAI's Codex CLI agent with extended context and function-calling.
The CheapAI proxy is 100% OpenAI-compatible. Replace base_url in the OpenAI Python SDK and everything else stays identical.
Fixed monthly plans with predictable daily spend limits. No surprise bills, no usage spikes. Ideal for building without watching the meter.
When to choose GPT — and when not to
✓ Choose GPT when…
- You use Cursor AI or Codex CLI already
- Your codebase uses the OpenAI Python SDK
- You need function calling and tool use
- You want broad ecosystem compatibility
- You prefer predictable per-plan pricing
✗ Consider Claude instead when…
- You need very long context (200K+ tokens)
- You want Claude Code CLI directly
- You prefer Anthropic's safety tuning
- Your task involves nuanced written outputs
GPT plan options
Fixed-price plans with guaranteed duration and a daily spend limit. Pay once with crypto — no recurring billing.
GPT-4o.2 · 1 Week
$80
$90/day spend limit · 7-day guarantee
o1-preview · 4 Days
$120
$150/day spend limit · 4-day guarantee
GPT-4o.2 · 1 Month
$400
$90/day spend limit · 30-day guarantee
o1-preview · 1 Month
$640
$150/day spend limit · 30-day guarantee
Quick setup
Python (OpenAI SDK)
from openai import OpenAI
client = OpenAI(
api_key="your-cheapai-key",
base_url="https://cheapai-netifly-app.up.railway.app"
)
response = client.chat.completions.create(
model="openai/gpt-5.4",
messages=[{"role": "user", "content": "Hello GPT-4o!"}]
)
print(response.choices[0].message.content)cURL
curl https://cheapai-netifly-app.up.railway.app/chat/completions \
-H "Authorization: Bearer your-cheapai-key" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.4", "messages": [{"role": "user", "content": "Hello!"}]}'Cursor AI
In Cursor Settings → AI → OpenAI, set the Base URL to https://cheapai-netifly-app.up.railway.app and paste your key. Then pick openai/gpt-5.4 as the model. See the full Cursor setup guide for screenshots.
Compatible tools
Limitations & tradeoffs
- Plan-based, not pay-per-token: GPT plans have daily spend limits, not unlimited raw token access. Suitable for most workloads; heavy batch jobs may hit limits.
- Crypto payment only: We accept Bitcoin, Ethereum, USDT, USDC, and others — but no credit card or PayPal.
- Not for regulated environments: This is not a HIPAA- or SOC 2-certified service. Do not use for sensitive personal health or financial data.
- Delivery within 24 hours: Usually faster, but the SLA is 24 hours after blockchain payment confirmation. Not instant.
GPT API FAQ
Is this the real o1-preview? +
Yes. CheapAI routes your requests to the real OpenAI models via a proxy endpoint. There is no custom or modified version — you get the same model outputs you would get calling OpenAI directly.
Do I need my own OpenAI account? +
No. CheapAI provides you with an API key and base URL. You do not need an OpenAI account. Just replace the base URL in your existing code or tool.
What happens if I hit my daily spend limit? +
Requests will return an error until the daily limit resets. The limit resets each calendar day. You can message @cheapai1sell to top up or upgrade mid-plan.
Does streaming work? +
Yes. Streaming is fully supported. Set stream: true in your request body — it behaves identically to OpenAI's streaming implementation.
Do you support function calling / tool use? +
Yes. The proxy passes all standard parameters through unchanged, including tools, tool_choice, and functions. Everything in the OpenAI spec is available.
What if my key stops working? +
Every plan is covered by a full service guarantee. If your key stops working during your plan period, contact @cheapai1sell on Telegram and we will replace it immediately or issue a full refund.
Can I use o1-preview and Codex models in the same plan? +
Plans are model-specific (GPT-4o.2 or o1-preview tier). With a o1-preview plan you also get access to the Codex variants. Check the models directory for the exact model IDs to use.
Pricing data sourced from openai.com/api/pricing. Official rates checked March 2026. Page maintained by the CheapAI team. About CheapAI →
Cut your GPT API costs by up to 65%
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