Mashable iconMashableSep 22, 2026

Anthropic launches Claude Opus 5.5, promising Fable-level performance at a lower price

Anthropic says Claude Opus 5.5 rivals Fable 5.1 on most work at 40 percent lower cost than Opus 5, with tougher safeguards.

Anthropic launches Claude Opus 5.5, promising Fable-level performance at a lower price

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Anthropic says Claude Opus 5.5 rivals Fable 5.1 on most work at 40 percent lower cost than Opus 5, with tougher safeguards.

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Anthropic says Claude Opus 5.5 rivals Fable 5.1 on most work at 40 percent lower cost than Opus 5, with tougher safeguards.

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