reflex
A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5.
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GITHUB · launched Sep 17, 2026 · 101 upvotes (top 8%) · 1 view
Niche: large language models · 191 launches, 4 in the last 7 days ▼ -33% · Explore this niche →
Category and tags
- Horizontal
- Model & infra
- Developer
- AI-native
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 191 launches in large language models →
Could you build this?
Partial Writing training and inference wrappers for Qwen3.5 is vibe-codeable, but training a calibrated decision model requires curating a novel specialized dataset and conducting machine learning research.
What it would actually take: Building this requires a training pipeline built on Hugging Face / PyTorch with Unsloth or Axolotl, fine-tuning an open weights model (Qwen 3.5) on structured state-to-probability tasks. The primary bottleneck is the dataset: one must construct synthetic or expert-labeled decision traces with well-calibrated probabilities and negative samples across diverse domains. Evaluating and tuning probability calibration (e.g., minimizing Brier score / Expected Calibration Error) requires ML research expertise rather than boilerplate app code.
Competitors
Other products that read as similar to this one : 2080 launches clear the similarity bar, closest 8 shown.
Attention rank: #204 of 2081 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 322 days after the earliest competitor.
- decider · github · 2026-09-16 · 130 upvotes · similarity 0.75
- openjev · github · 2026-09-16 · 19 upvotes · similarity 0.68
- quyet · github · 2026-10-03 · 23 upvotes · similarity 0.68
- jevbench · github · 2026-09-19 · 101 upvotes · similarity 0.66
- Qev · github · 2026-09-29 · 11 upvotes · similarity 0.66
- ProbabilityBench · github · 2026-10-14 · 9 upvotes · similarity 0.65
- tev1 · github · 2026-09-23 · 154 upvotes · similarity 0.65
- jev-benchmarks · github · 2026-09-17 · 15 upvotes · similarity 0.65
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