Claude Opus 5 is presented as Anthropic’s competitor to Kimi K3/Fable 5, with the author asserting it achieves near-Fable-5 intelligence at roughly half the price while reportedly removing strict safety restrictions and maintaining strong coding and reasoning performance.
Author claims Anthropic’s Claude Opus 5 matches Fable 5’s frontier intelligence while costing ~50% less and lacking what they call “crazy” safety restrictions (post dated 2026-07-24).
there it is, Anthropic’s answer to Kimi K3: claude opus 5 is basically Fable but 50% cheaper and none of the crazy safety restrictions
no trade-offs made in coding or reasoning either. this thing looks like a beast
Claude (@claudeai)
Introducing Claude Opus 5.
It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.
Video
— https://nitter.net/claudeai/status/2080699495453528290#m