reflex
A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5.
Details
- External ID
- 1375155214
- Source
- GITHUB
- Company
- —
- Product
- reflex
- Website domain
- github.com
- Launched
- Sept. 17, 2026
- Cohort
- —
- Upvotes
- 101
- Upvotes percentile
- 0.9253138611324622
- Tags
- —
- Fetched at
- Sept. 21, 2026, 5:02 p.m.
- Updated at
- Sept. 21, 2026, 5:02 p.m.
Enrichment
- Theme
- decision model runtimes and tools
- Vertical
- Horizontal
- Function
- Model & infra
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- small open decision model fine-tuned on qwen
- Manually corrected
- False
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 — 882 launches clear the similarity bar, closest 8 shown.
Attention rank: #95 of 883 (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 0.74
- openjev · github · 2026-09-16 · 19 upvotes · similarity 0.67
- jevbench · github · 2026-09-19 · 101 upvotes · similarity 0.64
- tev1 · github · 2026-09-23 · 154 upvotes · similarity 0.63
- jev-benchmarks · github · 2026-09-17 · 15 upvotes · similarity 0.63
- MagibuMizan · github · 2026-09-26 · 9 upvotes · similarity 0.63
- LLM2Jev · github · 2026-09-19 · 248 upvotes · similarity 0.61
- AnyJev · github · 2026-09-21 · 648 upvotes · similarity 0.60
Other launches for this product
Same idea, different domain
Nobody's really built a model & infra tool for Fintech yet.