Parsing

GPT-4o returns JSON with trailing comma in tool call While parsing function‑call output from GPT‑4o the JSON loader threw: json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 98 (char 97) The model emitted: { "name": "getStockPrice", "arguments": { "ticker": "AMD", }, "id": "abc" } Note the trailing comma after "AMD". Added a pre‑parse scrub: import re, json clean = re.sub(r",\s*([}\]])", r"\1", raw) data = json.loads(clean) Also set response_format={"type":"json_object"} in the request; 4o obeys the flag half the time.