Originality.ai™ vs Optima

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

Originality.ai™ compared with Optima
Detail	Originality.ai™	Optima
What it does	Most accurate AI detector for identifying ChatGPT, GPT-5, Gemini and other AI-generated content	Build custom benchmarks to compare frontier models on performance, cost, and time efficiency for your specific tasks
Stage	Not given	Not given
Founded	2022	Not given
Based in	CA	US
Pricing model	Freemium	Not given
Pricing	Not given	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 Checker - detect ChatGPT, GPT-5, Gemini, Claude, Grok and other AI writing tools Plagiarism Checker - identify plagiarism and duplicated content Writing Replay - shows authorship and writing process in browser extension Chrome Extension and Google Docs integration Moodle plugin for academic integrity checking Fact & AI Hallucination Checker Grammar and Spelling Checker Readability Checker and Content Quality Score API access for developers and integrations Bulk Scan for multiple texts at once	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	Proven accuracy in peer-reviewed third-party studies Trained on adversarial data to detect AI paraphrasing attempts Writing Replay feature proves human authorship Multi-product platform with plagiarism, grammar, fact-checking and readability tools Enterprise security with military-grade 256-bit encryption	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)	79 no change since last check	84 −1 (down) since last check
Trust Flow (Majestic)	24	28
Citation Flow (Majestic)	49	59
Referring domains (Majestic)	7344	17353

4 details filled in for both companies.

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