Perplexity Open-Sources pplx-decider-v1.1-27b, Tops New HF Decision Index
Perplexity released pplx-decider-v1.1-27b on October 7, an open-weights multimodal decision model that ranks first on the newly launched Hugging Face Decision Index 0.3 benchmark. Weights are available for download on Hugging Face, and API input pricing has been halved versus v1 to $0.02 per million input tokens.
Confirmed
- Perplexity released the open-weights multimodal decision model pplx-decider-v1.1-27b, which scored highest on the Hugging Face Decision Index 0.3 benchmark
- Pricing is half that of v1, at $0.02 per million input tokens
- Team member antoinechaffin said the model was iterated from v1 during a weekend sprint; on Decision Index v0.2, the same backbone raised the score from 56.4 to roughly 61.5, about 3.5 points ahead of then-second-place Jev, and it went straight to the top when the v0.3 leaderboard was released
- The model is publicly downloadable on Hugging Face and usable via API at very low cost; antoinechaffin specially thanked multimodalart for building the evaluation and leaderboard, and for helping run scores when the team submitted to v0.2
Why it matters
- With the dedicated benchmark for decision models (Decision Index) just launched, Perplexity immediately topped it with an open-weights model, demonstrating rapid iteration in this niche
- Open download plus halved API pricing sharply lowers the barrier to high-performance decision models, directly appealing to developers and cost-sensitive use cases
2026-10-07 ~ 2026-10-07 · 8 related posts
- Episode 1: Perplexity Open-Sources pplx-decider-v1-27b Decision Model(2026-10-02, 8 posts)
- Episode 2: Perplexity Open-Sources pplx-decider-v1.1-27b, Tops New HF Decision Index(2026-10-07, 8 posts)
Primary sources
- Perplexity's open decider model tops new Decision Index v0.3 leaderboard — antoine_chaffin ·
- New model goes public on HF with cheap API, thanks to community eval leaderboard — antoine_chaffin ·
- Perplexity's open-weights pplx-decider-v1.1-27b tops Hugging Face Decision Index 0.3 — AravSrinivas · 2026-10-07
- Perplexity ships open-weights pplx-decider-v1.1-27b at half the cost of v1 — perplexity_ai · 2026-10-07
- [source] Perplexity's open decider model tops new Decision Index v0.3 leaderboard — antoine_chaffin · 2026-10-07
- [source] New model goes public on HF with cheap API, thanks to community eval leaderboard — antoine_chaffin · 2026-10-07
- Perplexity open-sources pplx-decider-v1.1-27b, tops HF Decision Index at half the cost — bo_wangbo · 2026-10-07
3 near-duplicate retellings: antoine_chaffin · henrymodis · antoine_chaffin