An AI agent for students that estimates assignment grades using a draft, rubric, and assignment details, then provides targeted feedback to guide revisions before submission.
Prices in EUR — comparisons use USD at current FX. As parsed from grammarly.com/plans on 2026-08-25.
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Prices and medians update for the tier you select.
Compare at
Ai Grader · Pro
$12/mo
Pro plan
Pro-agent median
$12
across 10 priced agents
vs Pro agents
0% at par
at par with Pro agents
ⓘ Comparisons are same provider type (agent) and same buyer tier (Pro). Never across tiers.
Market density
5th pctile
2 strong substitutes
Price momentum · 31d
+2.6%
Agents · Pro median
$12/mo
10 priced · $9.99–$26.5 mid 50%
MCP servers · Pro median
$30/mo
3 priced · $19.5–$41.04 mid 50%
Agents cost 0.4× MCP servers at the Pro tier.
Price spectrum · Pro plans · 10 of 15 providers priced · log scale · $1.25 → $30/mo
Agents MCP servers◻ shaded = middle 50% · line = median (all types)large ringed dot = Ai Grader ($12/mo)
Products in this market
Ranked by how closely each one matches Ai Grader's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.