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Models2026-08-29 · source-backed
The team removed 8 tasks (2 saturated, 2 refusals, 2 with public solutions, 2 quality or platform issues) and fixed 19 more for flakiness or misspecification, calling it a major version because the changes require re-running every trial. The r/LocalLLaMA thread read the new board as GLM-5.3 sitting level with Fable 5 inside margin of error, and the top skeptical comment argued the generation-over-generation jump is "not just a saturation issue" given known leakage risk. Any Terminal-Bench number you're carrying from before this release is not comparable to one after it. (tbench.ai)
Each link below shares sources, entities, or timing with this story.
Anthropic released Fable / Shared entities / Earlier coverage
Linked by a graph relationship (Anthropic released Fable); both cover Bench, GLM, Terminal; earlier Bench coverage from 2026-07-08.
Linked by a graph relationship (Anthropic released Fable); both cover Bench, Fable, GLM, Terminal; earlier Bench coverage from 2026-06-26.
Anthropic released Fable / Shared entities / Earlier coverage / Tension
Linked by a graph relationship (Anthropic released Fable); both cover Bench, LocalLLaMA, Terminal; earlier Bench coverage from 2026-04-21.
Anthropic released Fable / Shared entity: Fable / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Anthropic released Fable); both cover Fable; overlapping topics (agent, fable).
Anthropic released Fable / Shared entities / Earlier coverage
Linked by a graph relationship (Anthropic released Fable); both cover Fable, GLM; earlier Fable coverage from 2026-08-24.
Linked by a graph relationship (Anthropic released Fable); both cover Fable, GLM; earlier Fable coverage from 2026-08-15.
Linked by a graph relationship (Anthropic released Fable); both cover GLM, LocalLLaMA; earlier GLM coverage from 2026-08-15.
Linked by a graph relationship (Anthropic released Fable); both cover GLM, LocalLLaMA; earlier GLM coverage from 2026-07-25.