Perplexity releases pplx-decider-v1.1-27b with a 61.56 Decision Index score and half the input price of v1

What changed

Perplexity released the open-weight multimodal decision model pplx-decider-v1.1-27b on October 6. The company says its overall score on Hugging Face Decision Index 0.3 rises from 56.4 for the prior version to 61.56, while input pricing falls to $0.02 per million tokens, about half the v1 price. The model continues to use a Qwen3.8-27B-family backbone, with changes including lifting the causal mask and adding training data. The Decision Index figures are benchmark results reported by the publisher/platform, not a universal model ranking.