Blocked biology requests on Fable 5 will route to Opus 5, Anthropic says
nc_frey · x · 2026-07-25
Requests blocked on Fable 5 will now be routed to Opus 5.
The post also says Mythos 5 remains the stronger model for long-horizon, open-ended biology research and drug discovery, and that the goal is to safely expand trusted access for the life sciences community. The accompanying image seems to illustrate a comparison of performance or behavior in this area.
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