Turnitin AI Detector vs Optima

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Turnitin AI Detector compared with Optima
Detail	Turnitin AI Detector	Optima
What it does	Free AI detection for essays and academic writing before submission	Build custom benchmarks to compare frontier models on performance, cost, and time efficiency for your specific tasks
Stage	Startup	Not given
Founded	2026	Not given
Based in	Not given	US
Pricing model	Freemium	Not given
Pricing	Free tier available. Paid plans: Basic $3.59/month (1 credit/month), Pro $14.79/month (5 credits/month), Ultra $22.79/month (12 credits/month). Yearly pricing available with up to 60% savings.	Token usage for creating and running benchmarks at raw model cost. Rubric grading: $0.002 per criterion per model (standard judges) or $0.040 per criterion (premium judges), $0.10 on agentic tasks. Pairwise grading: $0.006 per match (standard, $0.150 premium), $0.015 per match on document tasks (sta
Key features	AI detection score with estimated AI-likeness rating Paragraph-level report showing where AI signals appear Writing review suggestions for improvement Risk level classification (low, medium, high, very high) Analysis of predictable sentence flow patterns Detection of repeated paragraph structure Identification of generic academic language Private, non-repository mode processing No signup required for basic checking Bulk upload capability on paid plans	Custom benchmark builder with example-driven task creation Multiple evaluation types: Q&A, document analysis, agentic tasks, interactive conversations Run benchmarks across multiple frontier models simultaneously Cost and time per task metrics Standard and premium judge tiers for grading Rubric grading with custom criteria Deterministic objective grading No markup on model token costs
What makes it different	Independent tool not affiliated with or endorsed by official Turnitin Report-style results showing specific AI signals rather than just a percentage Analyzes multiple AI writing tools and styles including ChatGPT, Claude, and Gemini Designed specifically for academic writing with essay-focused features	Build benchmarks on your actual tasks and data instead of standardized tests Compare models across performance, cost, and time efficiency simultaneously Grading expertise from major AI evaluations
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 +1 (up) since last check	84 −1 (down) since last check
Trust Flow (Majestic)	6	28
Citation Flow (Majestic)	23	59
Referring domains (Majestic)	53	17353

4 details filled in for both companies.

More alternatives to Turnitin AI Detector More alternatives to Optima