OpenRouter's Fusion Promises Claude Fable-Level AI for Cheap—Right as Fable 5 Goes Dark

60-second summary

OpenRouter's Fusion is stacking budget AI models, outperforming GPT-5.5 and Claude Opus 4.8 in benchmark testing. This compound-model API is promising Claude-level AI capabilities at a lower cost. The achievement comes as Fable 5, a popular AI-powered game, faces server issues, highlighting the growing demand for advanced AI solutions and the need for cost-effective alternatives.