Memeburn posted a comparison of Claude Fable 5.1 versus Fable 5. The post states the newer model keeps the prior $10/$50 pricing while cutting cache read costs by 75 percent. This produces agent workflow bill reductions reaching 45 percent. The generated summary from the same source adds that the update brings better intelligence and higher speed. The linked Memeburn article title repeats the claim of smarter and faster results at up to 45 percent lower cost. No other sources appear in the packet.