Perplexity open-sources AI that only decides
Why it matters
Perplexity released Decider v1.2 on Oct 16 as open weights under Apache 2.0: pplx-decider-v1.2 (27B) and pplx-decider-flash-v1.2 (4B, distilled from the larger models). Instead of chatting, they answer yes/no, multiple-choice and scored questions about text or images with calibrated probabilities, the kind of small judgment calls agents and AI workflows make constantly. Version 1.2 reads a whole request in one pass, so several questions about the same input cost about as much as one, and the company says inference is up to 5x faster. On its own run of the public Decision Index, the overall score rises from 62.3 (v1.1) to 68.1 and vision from 73.2 to 77.4, and the 4B Flash model leads all 4B models on the Decision Index leaderboard. Decisions API pricing is $0.02 (27B) and $0.01 (Flash) per 1M input tokens, with output tokens free. Caveats: probabilities remain somewhat over-confident on held-out tasks, and training now includes official training splits of some Decision Index benchmarks (decontaminated against the test sets).
Read the source: Perplexity on Hugging Face (opens in a new tab)
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