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Spar — Train your thinking with AI

Most AI agrees with you. Spar argues back.

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Most AI is trained to agree with you. Spar is the opposite — an adversarial debate partner that pushes back, questions your sources, and finds the holes in your thinking. Pick from 6 archetypes (Cross-Examiner, Socratic, Journalist, Executive, Ideologue, Friendly Saboteur), argue any topic across 5 rounds, and get a coaching report on where your thinking held and where it broke. For debaters, writers, founders, and anyone who needs to defend their thinking. Built to make you sharper, not happier

Spar — Train your thinking with AI makers

Here are the founders, developers, designers and product people who worked on Spar — Train your thinking with AI