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It’a been a little bit over 1 year since Anthropic released their Max plans and Claude Sonnet and Opus 4, thus making Claude Code affordable and kickstarting the agentic revolution Opus 4 was a glimpse into the future. I’ve spent the entire summer swearing at it and typing ultrathink Today, Fable 5 feels like another step change I no longer need to type ultrathink. And no longer need to swear at Anthropic models. Only at their marketing team.