Lesson #25Different model families add a second dimension of research diversity
Multiple personas on one model are not a substitute for comparing opinions from different model families and providers.
Inspect evidence and consequence
What we observed
A single model family can reproduce shared assumptions across different investment frameworks. Batch 7 adds Claude Opus 5 and GPT-6 Astra alongside Gemini 3.8 Flash, including a matched Universal Investor researcher framework, to make provider-related differences and potential blind spots inspectable.
What changed
Retain model and framework provenance with every opinion, compare matched configurations, and withhold underlying model identities from the synthesis weighting prompt. Evaluate model diversity separately from the number of persona configurations.
Evidence scope
Lesson origin: Engine workflow
Completed Batch 7 collection: 426 assets, each with 12 Gemini Flash opinions, one Opus researcher and one Astra researcher; 5,964 total opinions.
Limits
- — The 12:1:1 opinion panel is not balanced by provider and must not be described as three equal model votes.
- — Different providers may share sources, training patterns and errors; diversity does not guarantee independence or eliminate bias.
- — Improved forecast accuracy requires subsequent evaluation and cannot be inferred from provider count.
Adoption and evidence
Implemented in Engine V7 / Batch 7 through matched researcher configurations across Google, Anthropic and OpenAI model families.
Incorporated since
Learned during
Batch 7
September 2026
The engine marker shows when this lesson became an operating control. The learning origin identifies the design phase or batch review that first produced it.