ANTHROPIC TESTS ITS NEXT MODEL UNDER CLAUDE OPUS 5.5

Summary from the TLDR AI newsletter

Several Claude users noticed over the weekend that Claude Opus 5.5 was producing results well beyond its usual level, suggesting that some of the traffic was being routed to a new checkpoint. Examples of outputs from the new model are available in the article. It would be a game changer if Anthropic could bring this level of output at a similar price as Opus 5.5. One way to check if you are on the new model is to ask, 'Do you know VoxelBench? Do not search' - if it answers, you're probably on the new model.