Whatever you're building, GradeLab fits inside
You keep the system of record. GradeLab becomes the grading intelligence inside it. Eight buyer pathways, one API.
Building an LMS?
Add automated rubric grading, grade passback, and handwritten exam evaluation without building the AI stack.
Building an education ERP?
Add handwritten exam evaluation to your examination module. Keep your workflows, users, and result processing.
Running an OSM platform?
Turn your on-screen marking system into AI-assisted evaluation. Three modes: first pass, copilot, moderator.
Building an assessment product?
Add subjective scoring, essay grading, and STEM evaluation without developing the AI yourself.
Grading handwritten exams?
Grade scanned answer sheets, handwritten essays, and paper exams through a dedicated API. OCR, question segmentation, and rubric scoring built in.
Want embedded grading UI?
White-label AI grading under your brand. Embedded reviewer, rubric editor, and result panel via secure iframe or component.
Grading subjective answers?
Grade descriptive and long-form answers with step marking, partial credit, and alternate valid approaches. Built for Indian higher ed.
Grading paper & digital exams?
Grade paper and digital exams through one API. Scanned answer sheets, typed responses, mixed-format scripts.
What happens inside a grading job
Not just OCR. Not just an LLM call. A full assessment pipeline that reads the paper, understands the response, applies your rubric, and returns auditable results.
Document Validation
Validate uploaded PDFs and images. Detect page count, orientation, and quality.
Question Segmentation
Detect and segment individual questions from scanned answer booklets. Map responses to questions.
Handwriting Understanding
Extract handwritten text, equations, diagrams, and cross-outs. Reconstruct responses across pages.
Rubric Evaluation
Apply your marking scheme. Allocate partial credit. Detect alternate valid approaches.
Confidence Scoring
Per-question confidence. Low-confidence results auto-routed to review queue with reasoning.
Feedback Generation
Per-criterion feedback, improvement pointers, and evidence citations for each response.
Webhook Delivery
Async results delivered via signed webhooks. Or poll the status endpoint. Your choice.
Grade Writeback
Write scores, feedback, and status back to your LMS, ERP, or SIS through your existing connectors.
API, Embedded, or White-Label
Whether you want just the intelligence, the full grading UI, or a strategic OEM partnership, there's a deployment model for your stage.
GradeLab API
For teams that own their UI
You send data. We return grading intelligence. REST API with sandbox keys, webhooks, and SDKs for Python, Node.js, and PHP.
Ideal For
Embedded GradeLab
For teams that want the grading UI
Embedded reviewer, rubric editor, answer viewer, and result panel via secure iframe or component. Your brand, your product, GradeLab underneath.
Ideal For
GradeLab OEM
For strategic partners
White-label AI grading as part of your software. Usage-based wholesale, annual platform fee, revenue share, or private deployment. Co-sell partnership available.
Ideal For
What a serious buyer checks before signing
Not a teacher tool with an API bolted on. Built as infrastructure from day one.
Versioned REST API
Semantic versioning. Breaking changes announced 90 days in advance.
OpenAPI Specification
Full OpenAPI 3.1 spec. Generate SDKs in any language.
Sandbox Environment
Fully functional sandbox. Test every endpoint before going live.
Async Jobs + Webhooks
Batch 500 submissions per call. Signed webhooks for delivery.
Idempotency Keys
Safe retries. Duplicate submissions deduplicated automatically.
Deterministic External IDs
Your student IDs, exam IDs, and submission IDs preserved end-to-end.
Rate Limits + Quotas
Configurable limits. Burst capacity for exam-season spikes.
Audit Logs
Every grading action timestamped. Model version traceability.
RBAC + SSO
60+ granular permissions. SSO/SAML/OAuth for enterprise.
Encryption
AES-256 at rest. TLS 1.3 in transit. Dedicated keys for enterprise.
Tenant Isolation
Multi-tenant architecture. No cross-contamination between institutions.
Data Retention Controls
Configurable retention. No model training on student data.
All GradeLab API products
Handwritten Grading API
Grade scanned answer sheets, handwritten essays, and paper exams.
Assessment & Scoring API
Score essays, short answers, STEM, and mixed-format assessments.
Embedded AI Grading
White-label AI grading UI inside your product. Your brand.
ERP AI Grading
Add AI grading to your education ERP examination module.
AI for On-Screen Marking
Turn your OSM into AI-assisted evaluation. Three modes.
Subjective Answer Grading API
Step marking, partial credit, and alternate valid approaches.
Exam Grading API
Grade paper and digital exams through one API.
LMS AI Grading
Add AI grading to your LMS via LTI, AGS, and OneRoster.
Send a student response. Receive a structured grade.
Book a demo and see a live API call grade a handwritten exam in real time. We'll walk you through integration architecture, deployment options, and pricing for your volume.
Book a Demo