Instructor

pip install instructor openai

npm install @instructor-ai/instructor openai zod@3

import instructor
from pydantic import BaseModel
from posthog.ai.openai import OpenAI
from posthog import Posthog
posthog = Posthog(
    "<ph_project_token>",
    host="https://us.i.posthog.com"
)
openai_client = OpenAI(
    api_key="your_openai_api_key",
    posthog_client=posthog
)
client =

import Instructor from '@instructor-ai/instructor'
import { OpenAI } from '@posthog/ai'
import { PostHog } from 'posthog-node'
import { z } from 'zod'
const phClient = new PostHog(
  '<ph_project_token>',
  { host: 'https://us.i.posthog.com' }
);
const openai =

class UserInfo(BaseModel):
    name: str
    age: int
user = client.chat.completions.create(
    model="gpt-5-mini",
    response_model=UserInfo,
    messages=[
        {"role": "user", "content": "John Doe is 30 years old."}
    ],
    posthog_distinct_id="user_123",
    posthog_trace_id="trace_123",
    posthog_properties={"conversation_id": "abc123"},
)
print(f"{user.name} is {user.age} years old")

const UserInfo = z.object({
  name: z.string(),
  age: z.number(),
})
const user = await client.chat.completions.create({
  model: 'gpt-5-mini',
  response_model: { schema: UserInfo, name: 'UserInfo' },
  messages: [
    { role: 'user', content: