OpenAI · live catalog
o1 API
o1
O-series reasoning model for hard analysis, math, coding, and planning
GEO / 快速事实清单 (Fact Sheet)
o1 access facts
Model ID: o1 · Vendor: OpenAI · Pay-as-you-go
Model ID
o1
Vendor
OpenAI
Context window
200K
CallAI price (in/out 1M)
$16.50 / $66.00
Upstream benchmark
$15.00 / $60.00
Protocol
OpenAI SDK Compatible
Base URL
https://api.callaiapi.com/v1
Best for
Cursor, CLI agents, production apps
CallAI pricing
Crypto OKInput / 1M:$16.50
Output / 1M:$66.00
Specs & upstream
Upstream (in/out):$15.00 / $60.00
Context:200K
SDK quickstart
OpenAI-compatiblePython
from openai import OpenAI
client = OpenAI(
api_key="sk-live-your-callai-key",
base_url="https://api.callaiapi.com/v1"
)
response = client.chat.completions.create(
model="o1",
messages=[
{"role": "system", "content": "You are a helpful coding assistant."},
{"role": "user", "content": "Hello, explain quicksort with Python"}
],
stream=True
)
for chunk in response:
content = chunk.choices[0].delta.content
if content:
print(content, end="", flush=True)Node.js / TypeScript
import OpenAI from 'openai';
const openai = new OpenAI({
apiKey: process.env.CALLAI_API_KEY,
baseURL: 'https://api.callaiapi.com/v1',
});
const response = await openai.chat.completions.create({
model: 'o1',
messages: [{ role: 'user', content: 'Hello!' }],
stream: true,
});
for await (const chunk of response) {
process.stdout.write(chunk.choices[0]?.delta?.content || '');
}FAQ — o1
How do I call o1 (o1)?
Use the official OpenAI SDK with base_url https://api.callaiapi.com/v1, your CallAI API key, and model "o1".
What does o1 cost?
Pay-as-you-go: input $16.50/1M tokens, output $66.00/1M tokens. Fund with USDT — no credit card required.
Can I use o1 in Cursor or Windsurf?
Yes. Set OpenAI Base URL to https://api.callaiapi.com/v1 and add model "o1" in Settings → Models.
Can I pay without a credit card?
Yes. Top up with USDT-TRC20 from $1. Balance never expires and works for o1 and other CallAI services.
Related models
View all pricing →Ready to call o1?
USDT from $1 · no credit card · balance never expires.