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Agent Benchmarking

29 summarised stories about Agent Benchmarking, each linking back to the original source. Browse all topics →

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Thursday, 10 September 2026

Agents on Rails: Fable 5.1 & GLM 5.3 Flash

rubyonrails.org 1 month ago 22 ● 2 sources

Claude’s Fable 5.1 and Z.ai’s GLM 5.3 Flash were rerun and posted on the Agents on Rails benchmark leaderboard with updated results. Fable 5.1 solved 58 of 63 runs (92%) at a $75 total price for all 63 runs, with 5.4 minutes median per run. Fable 5.1 takes the top position on multiple marks including price and security performance, and the previously stealth GLM 5.3 Flash is now listed with 52 of 63 runs (83%) for $3.31 total cost.

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