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Parameters

Every tuning parameter is optional. Send one and your value is used after validation; omit it, or send null, and the deployment default applies. Omission never means “send nothing” - it means “use the default”.

Parameter	Default	Accepted range	Forwarded	Notes
max_tokensinteger	40000	1 - 40000	yes	The cap equals the default, so `40000` is both the fallback and the maximum. Asking for more is a `422`, not a silent clamp.
temperaturenumber	0	0 - 2	yes	Leave it at `0` for extraction. Higher values make the model paraphrase fields instead of copying them.
top_pnumber	-	-	ignored	Accepted so OpenAI SDKs do not break. Has no effect.
reasoning_effortstring	-	-	ignored	An OpenAI reasoning-tier concept that does not apply to this model.
streamboolean	false	-	ignored	Responses are always returned whole. `true` is treated as `false`.

Unknown fields

Any field we do not recognise is dropped at the edge rather than rejected, so a newer OpenAI SDK will not break against this API - and arbitrary client input never reaches the model.

import os
from openai import OpenAI

API_KEY  = "Your API Key"
BASE_URL = "https://labs-api.petpooja.com/v1"
MODEL    = "chitragupta"

client = OpenAI(api_key=API_KEY, base_url=BASE_URL)

r = client.chat.completions.create(
    model=MODEL,
    messages=[{"role": "user", "content": "Extract this invoice as JSON."}],
  temperature=0,       # 0..2   (omit -> default 0)
  max_tokens=200,      # 1..40000 (omit -> default 40000)
)