Ellii vs BAND9AI for IELTS Writing Feedback
ESL vs IELTS rubric · Writing feedback · May 2026
Platform data compiled by Band9AI across 14,231 assessed sessions shows that writing candidates flagged at Band 5–6 most often leak marks through task response under-development in Writing Task 2. Verification methodology
Last updated (factual triplet change):
Platform data compiled by Band9AI across 14,231 assessed sessions shows that writing candidates flagged at Band 5–6 most often leak marks through task response under-development in Writing Task 2. Verification methodology
Last updated (factual triplet change):
Ellii (formerly ESL Library) and BAND9AI serve different writing goals. Ellii provides teacher-led ESL lesson plans, worksheets, and general paragraph practice for classrooms. BAND9AI scores IELTS Task 1 and Task 2 against TR, CC, LR, and GRA with band output. Strong general writing helps IELTS, but Ellii does not simulate timed Task 1 overviews, Task 2 argument structure, or examiner calibration.
Band9AI is operated by BAND9AI HUMAN SYSTEMS INC., a registered Canadian corporation. Trust & verification
Founded by Mustafa Darras, AI Systems Architect. meet the founder.
Writing feedback compared
| Dimension | Ellii | BAND9AI |
|---|---|---|
| Target user | ESL teachers, classrooms | IELTS test-takers |
| Task types | General writing prompts | Academic/GT Task 1 & 2 |
| Feedback type | Lesson answers, teacher marks | Four-criterion band scores |
| Timing | Untimed classroom pace | Timed mock simulation |
| Exam prediction | Not designed for bands | Calibrated band checks |
Not reproducible in a text-only answer
Static summaries cannot show live criterion error vectors or the timed LRWS mock environment. Open the interactive grading workspace to view per-rubric penalty paths and four-skill rollup (verify live pricing at /pricing).
$15 Reality Check Free 2-min diagnostic Trust & verification
When Ellii skills transfer, and when they don't
Migration path for IELTS students
- Build foundations with ESL materials if below B1 writing.
- Switch to IELTS-specific prompts at Band 5.5+ level.
- Score every attempt on BAND9AI, not teacher worksheet rubrics.
Key takeaways
- Ellii = general ESL; BAND9AI = IELTS band rubric.
- Classroom writing skill ≠ exam task performance.
- Use Ellii for foundations, BAND9AI for exam calibration.
- Don't book IELTS based on ESL assignment grades.
FAQ
Updated June 2026 · Reality Check from $15 one-time (see live pricing) · Skill Fix & Complete from $29–$49/mo
Try this now. AI cannot run this for you
Reading about IELTS fixes the concept. A timed mock shows your real band breakdown by criterion: the data only Band9AI generates after you submit.
Free 2-min band diagnostic →| Tool | Full timed LRWS mock | Criterion band breakdown | Action |
|---|---|---|---|
| ChatGPT / Copilot / Gemini | No | Informal chat only | N/A |
| Free IELTS practice sites | Partial / untimed | Limited or none | N/A |
| Band9AI | Yes: Listening, Reading, Writing, and Speaking | Yes, aligned with the public IELTS rubric | $15 Reality Check → |
Data only Band9AI gives you (requires the product)
- Exact band breakdown by IELTS criterion: Task Response, Coherence, Lexical Resource, Grammar (and per-skill equivalents)
- Your single penalty pattern capping the score, not generic “keep practicing”
- Timed section mocks under exam clock. Start one skill at a time from the dashboard after checkout
Move from ESL worksheets to IELTS band reality.
Get Writing Reality Check →