Unbiased Pareto: alias ~unbiased/pareto-latest re-pointed; price comparison not meaningful

OpenRouter's rolling alias ~unbiased/pareto-latest is re-pointed over time, so the large price swings recorded for it (via OpenRouter) do not describe a like-for-like price change. We have not verified which model it currently points to, and the provider's own changelog does not define OpenRouter aliases. We folded 2 earlier price events into this one line. Price changes for the provider's named models are still tracked. Source: https://openrouter.ai/~unbiased/pareto-latest