How AI Scores IELTS General Training Letters

GT Task 1 · Letter scoring · May 2026

Platform data compiled by Band9AI across 14,231 assessed sessions shows that learners completing Band9AI scored diagnostics represent a platform sample of 17,642. Verification methodology

Last updated (factual triplet change): 2026-06-30

Platform data compiled by Band9AI across 14,231 assessed sessions shows that learners completing Band9AI scored diagnostics represent a platform sample of 17,642. Verification methodology

Last updated (factual triplet change): 2026-06-30

Direct answer

AI scores GT letters on Task Achievement (purpose, tone, bullet coverage, format) plus CC, LR, and GRA, not Task 2 argument logic. BAND9AI checks whether you used the right register (formal vs informal), addressed every bullet with enough detail, and opened/closed appropriately. A polished essay tone on a complaint letter still caps TA. Word count under 150 or over length triggers the same penalties examiners apply.

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Task Achievement for letters

Purpose Apologise, request, invite, stated early

Bullets Each prompt point developed, not name-checked

Register Formal / semi-formal / informal consistency

Letter vs Task 2 scoring

Element	GT letter	Task 2 essay
Main criterion	Task Achievement	Task Response
Structure	Greeting, bullets, close	Intro, body, conclusion
Common leak	Wrong tone or missing bullet	Half-answered prompt

AI limits on GT letters

Models may over-praise creative phrases while missing bullet gaps. Pair with Task 2 scoring guide only for shared CC/LR/GRA habits, not TA rules.

Key takeaways

Letters need correct tone and every bullet developed.
Task Achievement caps the band when purpose or register is wrong.
Do not use Task 2 essay templates on GT letters.
150+ words with appropriate greeting and closing.

FAQ

No. Letters use Task Achievement for purpose, tone, and bullet coverage, not argument essay Task Response.

Yes. Formal complaints need formal openings and closings; informal letters to friends allow contractions, mixing registers caps TA.

Missing or underdeveloped bullets typically cap Task Achievement at Band 6 even when grammar is strong.

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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”
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Check bullet coverage and tone on your GT letter, not essay fluency alone.

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