Best AI for Grading

The 3 that fit

MagicSchool AI

By MagicSchoolDenver, United States1 product across 1 category

Built for this. Dozens of narrow tools for the jobs teaching actually involves — lesson plans, rubrics, differentiated texts, parent emails — instead of one blank prompt box.

Free plan: Yes; Forever free plan for individual teachers, with 80+ teacher tools
Month to month: $12.99/mo; Plus
Billed yearly: $8.33/mo; $99.96 a year, Plus plan −36%

Watch out: Output still needs a teacher to check it against the curriculum being taught. Free tier is generous but capped.

All plans (3)

Plan	Price	What you get
Free	$0	Forever free plan for individual teachers, with 80+ teacher tools
Plus	$12.99/mo · $8.33/mo yearly	unlimited generations, every MagicSchool tool, past work and previews, free trial
Enterprise	Custom	a custom data privacy agreement, oversight and admin controls

Open MagicSchool AI Pricing and company Prices checked 4 September 2026

ChatGPT

By OpenAISan Francisco, United States3 products across 8 categories

Built for this. The broadest feature set — voice, images, files, a large app ecosystem. Usually the easiest starting point.

Free plan: Yes; Ad supported; unlimited everyday text chats, limited image creation, memory and voice
Month to month: $8/mo; Go
Billed yearly: —; No yearly price published

Watch out: Check your data settings. On consumer tiers conversations may be used to improve models unless you turn that off.

All plans (6)

Plan	Price	What you get
Free	$0	Free tier, ad supported; unlimited everyday text chats, limited image creation, memory and voice
Go	$8/mo
Plus	$20/mo	advanced models, higher quality image creation, Work agent, Codex, 20GB of storage
Pro	$100/mo
Business standard seat	$25/mo · $20/mo yearly
Business premium seat	$125/mo · $100/mo yearly	5x the usage and no five-hour limit

Open ChatGPT Pricing and company Prices checked 4 September 2026

Claude

By AnthropicSan Francisco, United States3 products across 7 categories

Built for this. Long documents and reasoning that holds together over many pages. Handles large uploads well.

Free plan: Yes; Free tier with daily caps
Month to month: $20/mo; Pro
Billed yearly: $17/mo; $200 a year, Pro plan −15%

Watch out: Free tier caps out quickly under heavy use. Judge it against the others yourself rather than trusting any ranking.

All plans (6)

Plan	Price	What you get
Free	$0	Free tier with daily caps
Pro	$20/mo · $17/mo yearly
Max	$100/mo
Team standard seat	$25/mo · $20/mo yearly
Team premium seat	$125/mo · $100/mo yearly
Enterprise	$20/mo

Open Claude Pricing and company Prices checked 4 September 2026

Teachers pages

More specific “Best AI” pages for teachers-shaped work.

Best AI for Creating Worksheets

Differentiated reading levels and printable material

Best AI for Personalized Learning

Tutoring that stays inside a fixed curriculum

Best AI for Teachers

Narrow classroom jobs with their own forms

Best AI Tools for Teachers

Classroom output, checked against the curriculum you teach

Best AI for Education

Both sides of the desk: teaching and studying

Best AI for Lesson Plans

Standards, objectives and a usable first draft

Best AI for Creating Quizzes

Questions, distractors and answer keys

Best AI Assistants

Every tool in the category most of these come from.

Every AI tool we track

All 750 products, one page each.

How to read this list

Two things separate these and both are on every card.

Fit

Whether a tool is built for this job, a strong fit for it, or able to do it without that being its focus.

Free plan

Whether there is a tier you can keep using rather than a trial that expires.

The order

Fit first, then a free plan, then alphabetical. There is no score, no weighting we decline to publish, and nothing on this site a company can buy.

Questions

What is the best ai for grading?

There is no single answer, which is why this page lists 3 rather than one: MagicSchool AI, ChatGPT, Claude. 3 of them are built for this kind of work rather than able to do it. Start with a free one.

Which of these have a free plan?

3 of the 3: MagicSchool AI, ChatGPT, Claude. Free means a real free tier you can keep using, not a trial that expires.

How was this list chosen?

By hand, from the 750 products this site tracks, and it is checked against the catalogue on every build — a product renamed or removed breaks the build rather than quietly disappearing from here. Nothing on this site can be paid for: no listing, no position, no wording.