GPT-6.1 Terra vs. GPT-6 Luna: Which Is Better for Batch Automation? Comparing Cost and Accuracy Across 4 Real-World Tests
Author’s note: Terra’s per-token price is 10 times Luna’s, but its accuracy lead ranges from 4.7 to 18.7 percentage points. Using real test data from Plotly, DualEntry, and OSWorld, this article calculates the true cost per correct result in batch automation. OpenAI released GPT-6.1 Terra on October 26, 2026, just over a month after GPT-6…
