Serno
Serno's angle is running the same hard question through several models playing different expert roles instead of trusting one model's single answer, then showing where they disagree. That is genuinely useful for a strategy decision, but the vendor's site blocked automated verification here, so pricing and feature claims lean on third-party review coverage rather than the vendor's own copy.
Pros
- Runs the same question across Claude, GPT, and Gemini rather than locking into one model
- Surfaces disagreement between models instead of hiding it behind one blended answer
- Canvas format is exportable and shareable, not just a chat log
- Backed by Y Combinator and named seed investors, suggesting active development
Cons
- Vendor's own site blocked automated fetching, so this record leans on third-party coverage for some details
- Multi-model debate for every question is slower than a single-model chat for simple lookups