It's worth noting that most of these models have a similar price-per-1M-tokens, so differentiation is mostly whether the model output has the right "vibe" for y

It's worth noting that most of these models have a similar price-per-1M-tokens, so differentiation is mostly whether the model output has the right "vibe" for your use case, which can't easily be represented in most benchmarks. Competition will encourage a price race to the bottom (marginal cost = marginal revenue), but I question whether some of these companies will be able to maintain it long-term without lots and lots of venture capital.