Computer-Delivered IELTS Platform Features & AI Tools

Real-Time Conversational AI Speaking Examiner

Practice interactive voice interviews for Part 1, Part 2 (cue card), and Part 3 with an AI examiner that speaks, listens, and adapts follow-up questions dynamically.

• Voice-to-Voice Streaming: Low-latency Web AudioWorklets for natural conversational flow.
• Official 4-Criteria Evaluation: Diagnostic band scoring for Fluency and Coherence, Lexical Resource, Grammar, and Pronunciation.
• Timed Cue Card Interface: 1-minute virtual preparation notepad with an automatic 2-minute countdown.
• Phonological and Filler Word Tracking: Identifies speech pauses, hesitation clusters, and filler patterns.

Instant AI Essay Grader & Band 9 Model Rewriter

Submit Task 1 (visual reports and letters) and Task 2 (discursive essays) for instant evaluation across official IELTS criteria with line-by-line grammar feedback.

• 4-Criteria Rubric Scoring: Evaluates Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range.
• Sentence-by-Sentence Diagnostics: Pinpoints preposition slips, tense shifts, punctuation errors, and syntax issues.
• Band 9 Model Rewrites: Generates high-scoring paragraph rewrites demonstrating academic collocations.
• Word Count & Timing Tracker: Real-time word counters and 60-minute countdown timers for pacing practice.

Computer-Delivered Reading Exam Simulator

Practice Academic and General Training reading passages on a split-screen interface identical to the official computer-delivered IELTS exam software.

• Authentic Split-Screen Layout: Resizable reading passage panel alongside the question navigation panel.
• Live Passage Highlighter: Highlight text directly on the passage to mark key evidence under timed conditions.
• All Cambridge Question Types: Full support for True/False/Not Given, Matching Headings, and Completion.
• Instant Raw-to-Band Scoring: Converts correct answers out of 40 into official 0 to 9 band scores with explanations.

Cambridge-Calibrated Multi-Accent Audio Engine

Listen to 4-section audio recordings featuring British, Australian, North American, and international native English accents under strict test conditions.

• Single-Playback Audio Engine: Replicates official test rules with uninterrupted playback and preparation pauses.
• Multi-Accent Audio Training: Practice with British RP, regional UK, Australian, American, and international speakers.
• Timestamped Explanations: Review submitted tests with synchronized transcripts showing exact audio clues.
• Section Tab Navigation: Fast tab switching across Parts 1, 2, 3, and 4 with question review flags.

Low-Latency AudioWorklets

Browser-level audio processing streams uncompressed 16kHz PCM audio for instant, natural conversational speaking interviews.

Calibrated AI Scoring Models

Evaluation engines fine-tuned strictly on official British Council and Cambridge Assessment English public band descriptors.

Automated Session Recovery

Real-time Firestore persistence ensures your test progress, highlighted text, and typed essays are never lost during power or network blips.

Strict Data Privacy & Isolation

Audio streams and essay submissions are processed securely in isolated serverless sessions without third-party data sharing.

Historical Trend Trajectories

Track overall and modular band score growth across multiple mock attempts to verify steady score increases.

Question Type Breakdown

Isolate specific weakness patterns across True/False/Not Given, Matching Headings, or Lecture Multiple Choice questions.

Target Readiness Indicator

Forecast your probability of achieving your required Band 7.0 or Band 8.0 target on test day with data-backed benchmarks.

How does NextGen IELTS replicate the official computer-delivered IELTS exam?

Our test platform replicates the exact typography, color scheme, split-screen question layout, audio controllers, text highlighter, and section navigation used in official British Council and IDP computer-delivered test centres.

How accurate is the AI examiner compared to human IELTS examiners?

Our AI scoring models are calibrated against the official Cambridge IELTS 9-band public descriptors. For Writing and Speaking, the engine assesses performance across all four criteria (TR/TA, CC, LR, GRA/PR) with a high degree of correlation to certified examiner benchmarks.

Do I need to install any software or plugins to practice?

No. NextGen IELTS runs entirely in your web browser (Chrome, Edge, Safari, Firefox). No software installation or downloads are required.

What is included in the Free Starter Plan?

Mock Test 1 is 100% free forever. It includes complete 4-module practice (Listening, Reading, Writing, Speaking) with instant AI essay grading and voice examiner interviews.

Can I practice individual modules separately or only full tests?

You can practice full 4-module mock exams or practice individual sections independently (e.g. practicing only Speaking Part 2 or Writing Task 2 essays).

How does progress tracking and band gap analysis work?

Your student dashboard automatically aggregates scores from all completed tests, visualizing your score trajectories across Listening, Reading, Writing, and Speaking with target band gap analysis.