Internal Tests Show AI Model 5.6 Clearly Beats Fable

Jay Air said on X that his team had unusually clear internal results comparing "5.6" with "Fable," arguing that 5.6 felt like a "step change improvement" and that the team stayed unhappy when Fable returned before 5.6 did. That account was amplified by Charlie Marsh, quoted up by Yacine, and reposted by Sam Altman. The core claim is still an internal one, not an independently verified benchmark.