MajorAnthropicNew Launch
Claude Opus 4.8 removed from models page, Fable 5 and Mythos 5 added
Anthropic removed Claude Opus 4.8 from the models documentation and added Claude Fable 5 and Claude Mythos 5 as the new most capable models. This is a significant model lineup change that may require users to migrate to new models for highest capability tasks.
Jun 11, 2026 (UTC)Views:2
Impact Assessment
Cost2
Reliability0
Migration4
Quality4
Compliance0
Sources
docs
Anthropic Models Docs
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