Where interaction becomes structure.

Long-form human-LLM interaction, examined as structure rather than content. Across hundreds of turns, interaction develops patterns, variation, and measurable structure that short exchanges cannot reveal.

Why long-form interaction.

Most of what we know about language models comes from short exchanges — benchmarks, single prompts, brief task completions. The interactions that matter in practice are longer: research threads, working relationships, extended analysis. At that scale, something different becomes measurable. Pacing, coupling, and structural variation emerge that aren't visible in a single turn and cannot be inferred from one.

We treat long-form interaction as its own research object — not a longer version of short interaction, but a distinct regime with its own dynamics worth measuring carefully.