Rumor: Anthropic testing Haiku 5 and Sonnet 5.1 instead of Fable 5.1
ChrisGPT · x · 2026-08-24
Leakers suggest Anthropic is testing two new EAP models, likely Haiku 5 and Sonnet 5.1. The author expresses disappointment, noting that Fable 5 remains far superior for coding tasks.
Related event: Rumor: Anthropic to Release Multiple New Models Within Days(2 posts)→
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