Rumor: Haiku 5.5 edges out Mythos preview on Anthropic's internal ECI benchmark
inductionheads · x · 2026-10-08
A tweet claims that on Anthropic's ECI benchmark, Haiku 5.5 scores marginally higher than the Mythos preview, which was reportedly made available to Project Glasswing partners six months ago. The claim involves unannounced Anthropic models and an internal benchmark and is unverified.
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