stetbot

What is stetbot?

Stetbot is an AI-powered self-check tool that grades student essays sentence by sentence against any rubric. It works like a teaching assistant, reading every sentence and annotating what is strong, weak, or missing. Students use it to catch gaps in arguments, evidence, and structure before submitting their work. The tool is free to start, with no credit card required.

Application scenarios

Essay grading
Students paste essays and rubrics to get sentence-level feedback on arguments, evidence, and structure.
Lab reports
Stetbot reads lab reports and grades them against any rubric format, including bullet points, PDFs, or tables.
Code assignments
Users can paste code for grading, with the tool evaluating each line against the rubric.
Bulk grading for classes
Teachers or TAs can grade an entire class at once by pasting, dropping files, or importing a CSV.
Draft improvement
Students track how their scores improve over time by revisiting saved grading history.
Self-check before submission
Users get annotated feedback on every sentence, identifying gaps before the final hand-in.

Core Features

Sentence-level annotation
Every sentence gets a score and an underline; hover to see exactly what is strong, weak, or missing.
Three feedback tones
Toggle between encouraging, neutral, and strict—same grade, different voice.
Grading history
Every grading is saved to your account; revisit any draft and track score improvements over time.
Bulk grading
Grade an entire class at once by pasting, dropping files, or importing a CSV.
Any rubric format
Paste any rubric—bullet points, PDFs, tables—or build one with the structured editor.
100% private
No mention of data sharing; the site emphasizes privacy.
Works with multiple formats
Accepts essays, code, and lab reports; reads text from any format (paste or drop a file).
GPT-4o grading (Pro)
Pro users get higher-quality grading using the GPT-4o model.

Target users

Stetbot is built for students who want to self-check essays, lab reports, or code before submission. It also serves teachers and teaching assistants who need to grade multiple submissions quickly. The bulk grading feature and CSV import make it useful for instructors managing entire classes.

How to use stetbot?

Sign up for free at stetbot.com—no credit card required.
Drop your rubric in any format (bullet points, PDF, tables) or use the structured editor.
Paste your work—essay, code, or lab report—by pasting text or dropping a file.
Get annotated feedback immediately: every sentence is marked strong, soft, or missing the mark, with a note explaining why.
Review results sentence by sentence, hover underlines for details, and toggle between three feedback tones.

Pricing and free trial

Free ($0): Forever free, no card needed. Includes 8 gradings per week, full sentence annotation, all three feedback tones, and grading history (last 50).
Pro ($5/mo): Unlimited gradings, GPT-4o grading, essays up to 100,000 characters, full grading history, export history as CSV, bulk grading (whole classes), and priority support.

Effect review

Stetbot delivers exactly what it promises: a fast, sentence-level grading tool that mimics a TA’s eye. The free tier is generous enough for weekly use, and the Pro upgrade is affordable for heavy users. The three feedback tones give students control over how they receive critique, which is a smart touch. For teachers, bulk grading via CSV can save hours. While no user reviews are mentioned on the site, the feature set is practical and directly addresses common student pain points—missing evidence, weak arguments, and structural gaps.

Frequently Asked Questions

How does Stetbot grade essays?

Stetbot grades essays sentence by sentence against any rubric, identifying weak arguments, missing evidence, and structural gaps.

Can I use my own rubric?

Yes, Stetbot allows you to input any rubric for grading.

Is Stetbot free to use?

Stetbot offers a free tier with limited features; premium plans are available.

Does Stetbot provide feedback on grammar?

Stetbot focuses on argument quality, evidence, and structure, not grammar.

Can teachers use Stetbot?

Yes, teachers can use Stetbot to provide consistent feedback or as a teaching aid.

How long does it take to grade an essay?

Grading is typically instantaneous once the essay and rubric are submitted.