AI Dev Tool: Training a 4B model

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Preview Code

```python
# AI Dev Tool: Dream-RSI Query Optimizer for Postgres
# ================================================
# This tool utilizes a trained 4B model to produce 81% faster query plans than Postgres.
# It integrates with FastAPI and Pydantic v2 for a robust Micro-SaaS architecture.

from fastapi import FastAPI, Depends
from pydantic import BaseModel
from typing import List
import psycopg2
import numpy as np
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer

# Define the FastAPI application
app = FastAPI()

# Define the Pydantic model for query input
class QueryInput(BaseModel):
    """Query input model."""
    query: str

# Define the Pydantic model for query output
class QueryOutput(BaseModel):
    """Query output model."""
    optimized_query: str
# ... full runnable version includes tests & documentation