Free AI IELTS Writing Checker: A ChatGPT Prompt That Actually Gives Useful Feedback
A huge number of candidates ask ChatGPT to check their Task 2 essay and get back generic praise instead of real feedback. The problem usually isn't the AI - it's the prompt.
IELTS Writing Task 2 is graded against four specific criteria: Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy. A plain "is this good?" prompt gives an AI no framework to evaluate against, so it defaults to encouragement instead of analysis. Give it the real examiner framework instead.
The prompt
Copy this into ChatGPT, Claude, or your AI of choice, then paste your essay directly underneath:
"You are an experienced IELTS examiner. Assess the following IELTS Writing Task 2 essay strictly against the four official band descriptors: Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy. For each criterion, give a band score estimate (out of 9) with 2-3 specific sentences explaining exactly what is limiting the score - quote the specific phrase or sentence that illustrates the issue. Then give an overall band estimate. Finally, list the 3 highest-impact changes I could make, in priority order. Be honest and specific, not encouraging. Here is my essay: [paste your essay here]"
Where AI feedback helps, and where it still falls short
AI is genuinely useful for catching grammar patterns and repetitive vocabulary, and giving a rough directional sense of level. It can't fully replicate a trained examiner's judgment on nuanced Task Response or subtler Coherence issues — treat AI band estimates as a useful signal, not a certified score.
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Can ChatGPT give an accurate IELTS Writing band score?
It can give a reasonable estimate when prompted with the official 4 criteria, but it's not a certified score — treat it as a directional signal.
Why does AI feedback feel too positive by default?
Most AI models default toward encouraging responses unless explicitly told to prioritize accuracy over reassurance.
Is it against IELTS rules to use AI on practice essays?
No — this only concerns preparation, not the actual exam itself, which has its own strict rules against outside assistance.
Should I trust AI over a real teacher's feedback?
Use both if you can — AI is fast for catching obvious issues; a trained human is still better at nuanced Task Response judgment.
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