User '小互' commented that Fable 5 was quickly eliminated and outperformed, questioning the previous practice of 'hesitantly restricting for two weeks, then only giving 50% of the quota' when Fable 5 was released. This comment implies that Fable 5 was subject to usage restrictions, but this information has not been officially confirmed.
Another user '西红柿麨番茄' speculated that directly lifting Fable 5's usage restrictions would be awkward, so Claude chose to release a new model, Opus 5. This claim is user inference, not an official explanation.
User 'ChainBuilder.pro' provided data on Fable 5's agentic coding performance: 69.7% and 53.5%, but the source of this data is unclear and has not been officially verified.