GPT-6-Astra beats Fable-5.1 at RollerCoaster Tycoon 2 in 3 hours, using 5x fewer tokens
scaling01 · x · 2026-09-18
- A user benchmarked GPT-6-Astra against Fable-5.1 by having both play RollerCoaster Tycoon 2, with the goal of reaching 1,000 visitors and maximizing profit.
- Astra hit the 1,000-visitor goal in 3 hours with a park valued at $65k. Fable-5.1 never got there (the run ended when the user's credit limit ran out), reaching only $18k in park value while burning 5x the tokens.
- A vivid head-to-head of agentic long-horizon performance: differences show up in task completion, efficiency, and cost simultaneously.
Related event: GPT-6-Astra Crushes RollerCoaster Tycoon 2 Benchmark at Quarter the Cost(2 posts)→
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