May 14, 2026 · Artificial Intelligence

Introducing TTFA: Hong Kong University’s Open‑Source FASTER Gives VLA Models Instant Reaction

The paper identifies real‑time latency as the main obstacle for deploying VLA models on robots, proposes the TTFA metric and the FASTER framework with a Horizon‑Aware Schedule, mixed scheduling and streaming inference, and demonstrates through extensive GPU and task experiments that TTFA and reaction time can be cut by up to three‑fold without sacrificing motion quality.

Embodied AIFASTERReal-time inference

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Introducing TTFA: Hong Kong University’s Open‑Source FASTER Gives VLA Models Instant Reaction