On hard math, the model that shows its work usually wins. DeepSeek V4 Pro and Claude Opus 4.6 are reasoning-heavy; GPT-5 is faster but less rigorous. CouncilMind runs them all on your problem and shows the work.
GPT-5: The integral evaluates to π/2 by symmetry of the integrand.
DeepSeek V4 Pro [reasoning]: Verifying. Substitute u = ... Apply ... Yes, the symmetry argument holds; the result is π/2.
Synthesis: π/2 is correct; DeepSeek's verification gives you a defensible derivation.
A wrong answer with confidence is worse than 'I don't know'
DeepSeek V4 Pro shows every step. Mistakes become inspectable.
Two models arriving at the same answer via different paths is much stronger evidence than one model's claim.
Run any answer through a skeptic to find counter-examples or unjustified steps.
Show the work, then verify
Algebra, calculus, proof, applied—anything.
DeepSeek V4 Pro and Claude Opus 4.6 show their work; GPT-5 produces the polished answer.
A skeptic pass either confirms the work or surfaces the gap.
Free tier. Premium reasoning included.