Ask ChatGPT to summarize a rate confirmation or explain a contract clause, and the real risk isn't a clumsy answer — it's a confident one that quietly gets a number or a term wrong.
OpenAI's new GPT-5.6 Sol is now the single model behind both quick replies and deep reasoning for paid ChatGPT users. On OpenAI's own high-stakes tests across finance, medicine, and law, it produced 68% fewer answers containing a factual error than the previous version, and it's tuned to push back when a wrong assumption would otherwise get a polite yes. A new reasoning slider lets you dial the effort down for a quick question or up for something messy like a contract clause. Free users move to GPT-5.6 Luna with unlimited text chats.
For a freight desk that leans on AI to draft customer emails, digest rate confirmations, or read contract language, accuracy on finance- and law-style questions is the whole game. Fewer invented details — and a model that flags when you're wrong instead of agreeing — is worth more day to day than raw speed. It doesn't remove the need to check the source document; it just makes the first draft one you can trust a little further.
Operators using ChatGPT for freight paperwork — summarizing rate cons and BOLs, drafting replies, reading contract clauses — get fewer confident-but-wrong answers on exactly the finance- and legal-style questions that fill a back office.
https://9to5mac.com/2026/08/06/openai-updating-chatgpt-with-a-smarter-gpt-5-6-sol-and-unlimited-free-chats/