How BAND9AI Scores IELTS Speaking Criteria

Speaking rubric · BAND9AI method · May 2026

In Band9AI first-party platform telemetry (see methodology), candidates completing timed speaking mocks with criterion-level feedback show an observed average practice-score change of about 0.8 bands. This is an observational practice metric, not a controlled trial or guaranteed official IELTS lift. Verification methodology

Last updated: 2026-06-30

Updated 2026-10-12

Direct answer

BAND9AI scores Speaking against the four public IELTS criteria. Fluency and Coherence, Lexical Resource, Grammatical Range and Accuracy, and Pronunciation, each with its own band and quoted evidence from your audio transcript. Unlike generic chat ("sounds good, Band 7"), the system anchors to published band descriptors, flags hesitation patterns, collocation gaps, and structural errors, then averages the four criterion bands using the same rounding rule IELTS publishes.

Part of the IELTS Speaking Guide: every speaking trap, band descriptor and practice drill in one place.

Band9AI is run by BAND9AI HUMAN SYSTEMS INC., a company registered in Canada. Trust & verification

Written by Mustafa Darras, AI Systems Architect. meet the founder.

The four criterion pass

FC Hesitation, self-correction, discourse markers, answer development

LR Topic-specific vocabulary, paraphrase, collocation accuracy

GRA Range of structures, error density, meaning impact

PR Intelligibility, word stress, sentence rhythm, not accent prestige

Scoring method vs generic AI

Step	BAND9AI	Generic chat
Input	Audio → transcript + timing cues	Text paste or vague listen
Anchor	Public band descriptors per criterion	Implicit "native-like" feel
Output	4 bands + quotes + weakest leak	Single headline band
Overall	Average + 0.5 rounding	Arbitrary

Known limits (honest calibration)

AI cannot replicate examiner room dynamics, eye contact, cue cards, or accent tolerance in noisy halls. Pair BAND9AI checks with human mocks for Part 3 depth. Read AI speaking evaluation accuracy limits and Claude speaking limits for comparison context.

Key takeaways: How BAND9AI Scores IELTS Speaking Criteria

Four separate criterion bands, not one vague overall guess.
Evidence quotes tie feedback to public IELTS descriptors.
Overall band = average of four criteria, rounded to 0.5.
Validate AI Speaking scores with human mocks before exam day.

How BAND9AI Scores IELTS Speaking Criteria: common questions

You submit a full response; the system scores the clip against all four criteria holistically, noting Part 2 length and Part 3 depth where relevant.

AI flags intelligibility, stress, and rhythm patterns, it cannot replicate in-room accent tolerance. See AI speaking evaluation accuracy limits.

IELTS averages the four criterion bands and rounds to the nearest 0.5, same public rule BAND9AI applies to its breakdown.

Official IELTS references

The criteria and score bands on this page follow the public IELTS documents below. Band9AI is independent and not affiliated with the British Council, IDP or Cambridge.

Reality Check from $15 one-time (see live pricing) · Skill Fix & Complete from $29–$49/mo

Practice drill: How BAND9AI Scores IELTS Speaking Criteria

Reading helps you understand the problem. A timed mock shows how it affects your band, one IELTS criterion at a time.

Free 2-min band diagnostic →

Tool	Timed four-skill mock	Score for each criterion	Action
ChatGPT / Copilot / Gemini	No	Chat only	N/A
Free IELTS practice sites	Partial / untimed	Limited or none	N/A
Band9AI	Yes: Listening, Reading, Writing, and Speaking	Yes, based on the public IELTS band descriptors	$15 Reality Check →

What you get from a Band9AI mock

A band for each criterion, such as Task Response, Coherence and Cohesion, Lexical Resource and Grammar in Writing
The one mistake pattern holding your score back, not generic advice to keep practising
Timed practice for one skill at a time, from your dashboard after checkout

Find your Speaking weak spot with a $15 timed mock Free diagnostic first

See your four Speaking criterion bands with quoted evidence.

Get IELTS Reality Check →