Study G · Interface reliability
One hidden SDK default, two very different benchmarks
The tool-history footgun
Study Overview
The Manufactured Gap
The original +33pp multi-turn gap was manufactured by conversation histories that omitted the model's own tool calls (the AI SDK v5→v7 response.messages trap).
The Correction
Same tasks, same prompts; only history construction differs. Under corrected history, all 2,160 Study G cells pass.