reflex
reflex is A tiny System One decision model running on WebGPU. State + typed questions in, calibrated probabilities out. Nothing leaves your machine.. It is ranked #53 on the Dev Radar, in AI dev tools, first seen 1 days ago and shared in 2 posts (256.2k views).
reflex · decisions, with probabilities, in your browser reflex · a System One model in your browser Ask a picture, or a paragraph, and get odds back. Give it some state and a few questions with fixed answers. It answers every question in one pass and says how sure it is about each option. The model runs on your own GPU through WebGPU; nothing is uploaded anywhere. 1 Pick a preset or write your own state and questions. 2 Load the model once (Qwen3.5-0.8B, about 650 MB, cached by your browser). 3 Run. Each answer is a probability distribution, not a sentence. No WebGPU in this browser (try Chrome, Edge, or Safari 18+). Falling back to…
What people said about reflex on X
Here, have jev running in your browser
— @tobi, 1 days ago · 572 likes · see the post
“Wonder if we could build that?” is a pretty normal response to new tech at @Shopify. Its a fun place to work 😄 Jev got me curious, so I built Reflex: a Qwen-based experiment in structured decisions + probabilities running on WebGPU https://kshetrajna12.github.io/reflex/
— @kshetrajna, 1 days ago · 325 likes · see the post
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reflex in numbers
- Rank on the Dev Radar: #53 of 1355
- Shared in 2 posts by 2 accounts: @tobi, @kshetrajna
- 256.2k views on those posts
- First seen 1 days ago, last shared 1 days ago
- Pricing seen by Jev: free
- Market: AI dev tools
FAQ
What is reflex?
A tiny System One decision model running on WebGPU. State + typed questions in, calibrated probabilities out. Nothing leaves your machine. It was first shared on X 1 days ago and is ranked #53 on the Dev Radar.
Is reflex free?
Yes, it is free to use.
Who shared reflex?
2 accounts on X, including @tobi, @kshetrajna, in 2 posts totalling 256.2k views.
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 12.2k posts from 4.7k X accounts over the last 21 days, 1.4k tools, 12 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-19 18:39 UTC. Full method.