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[ARTICLE · art-144877] src=playground.jeffyclassify.com ↗ pub= topic=machine-learning verified=true sentiment=↑ positive

Jeffy playground – play with classifiers you can pip install and run on CPU

Jeffy Playground launched a catalog of 16 pretrained text classifiers that developers can install via `pip install jeffy-classify` and run on CPU without a GPU or API keys. The demos include SMS spam detection at 99.1% accuracy, DBpedia ontology classification at 96.0%, IMDB sentiment at 94.8%, banking77 intent detection at 94.3%, and a Doom gameplay classifier that uses logistic regression on 24 game-state features to choose FIRE, TURN LEFT, or TURN RIGHT in under 1ms. The playground also offers an inbox router trained on 24 labeled examples across Work, Family, Promo, and Notifications, plus a four-player Texas Hold'em demo where each decision runs on 18 game-state features.

read1 min views1 publishedOct 4, 2026

Pretrained Classifiers #

16 classifiers ready to use. Click a model to try it.

doom_fireLive Demo

Real-time Doom gameplay classifier (24 game-state features) inbox_routerLive Demo

Train and classify emails into Work, Family, Promo, Notifications

poker_decisionLive Demo

4 AI players play Texas Hold’em using game-state classifiers

sms_spam99.1%

SMS spam detection

dbpedia96.0%

Wikipedia article ontology classification

imdb94.8%

Movie review sentiment (positive/negative)

banking7794.3%

Banking customer service intent detection

ag_news90.6%

News article topic classification

sst290.1%

Movie review sentiment (positive/negative)

clinc_oos88.4%

Intent detection with out-of-scope massive_intent88.1%

Amazon MASSIVE voice command intents

tweet_eval_offensive81.0%

Offensive language detection

tweet_eval_emotion78.1%

Tweet emotion detection

emotion75.5%

Text emotion detection

tweet_eval_sentiment66.2%

Tweet sentiment analysis

snli65.6%

Natural language inference

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Labels

Info

Try it

Usage

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doom_fire

Real-time Doom gameplay classifier. Extracts 24 game-state features and decides: FIRE, TURN LEFT, or TURN RIGHT. Logistic regression, no neural network, no GPU.

3Classes

24Features

<1msLatency

CPURuntime

100HP

26Ammo

0Kills

0Enemies

1Episode

Decision Log

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Inbox Classifier Demo

Train an inbox router from 24 labeled examples, then watch it classify new messages in real time. CPU only, no API keys.

4Classes

24Train examples

~50msLatency

CPURuntime

Training Data

Inbox

Incoming

Work 0

Family 0

Promo 0

Notifications 0

terminal

pip install jeffy-classify

Try it

Usage

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Poker AI Demo

Four AI players play Texas Hold'em. Each decision is a Jeffy classifier running on 18 game-state features. No neural network, no GPU.

4Players

4Actions

18Features

<1msClassify

0pot

Alice 1000

Bob 1000

Carol 1000

Dave 1000

preflop Hand #1

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