› OpenAI lists technical drawing interpretation as one of GPT-6.1 Terra’s main use cases.
› On launch day, Terra read two clean computer-generated drawings without errors.
› So, on October 26, 2026, I made the task harder: I tested the same flange as a noisy scan and as a photo of a print taken at an angle, plus a new shaft drawing with tolerances, a thread, and a keyway.
› Terra scored 57 out of 58 points - the same as GPT-6.1 Sol and Gemini 4 Argon.