
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
DeepL records 95,110,871 monthly visits with -1.7% month-over-month growth and Freemium pricing. OETStudy records 4,738 monthly visits with +264.2% growth and Free pricing.

AI-powered practice and scoring for the Duolingo English Test
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | deepl.com | oetstudy.com |
| Pricing Model | Freemium | Free |
| Monthly Visits | 95.11M (95,110,871) | 4.74K (4,738) |
| MoM Traffic Delta | -1.66M (-1.7%) | +3.44K (+264.2%) |
| Primary Market & Share | 🇩🇪 Germany (15.8%) | 🇺🇸 United States (100%) |
| Direct Visits / mo | 60.38M | 1.54K |
| User Rating | 4.7 | 4.4 |
| Supported Platforms | Website | Website |

Enterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Translates whole PDF, Word (.docx), PowerPoint (.pptx), Excel (.xlsx), and HTML files up to 30 MB (Individual/Team) or 100 MB (Business/Enterprise) while keeping original fonts, tables, slides, and visual formatting intact.
Ensures consistent brand and technical terminology across language pairs using CSV-importable shared glossaries, automated glossary generation, shared style rule lists, and translation memory.
Enhances original drafts and translated copy with real-time sentence rewrites, word alternatives, and one-click tone adjustments (e.g., Business, Academic, Casual, Diplomatic) via browser, desktop, and Microsoft 365/Google Workspace add-ins.
Provides real-time spoken language translation and live multilingual captions for video conferences and mobile in-person dialogues, with 30 minutes per user per month included in paid DeepL Pro plans.

AI-powered practice and scoring for the Duolingo English Test
A large bank of DET-style items spanning speaking, writing, listening, and reading, graded by difficulty so you can practise at the level you need.
Speaking and writing submissions are scored automatically, evaluating pronunciation, fluency, grammar, and content structure with suggestions for improvement.
Check your vocabulary level against CEFR bands and build word lists clustered around the question types you practise most.
Practice statistics and score analysis highlight weak areas and show how your performance changes over time.

OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

SpecialistCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
SpecialistCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
SpecialistParaphrase, proofread and summarize text with an AI writing workspace
SpecialistParaphrase, proofread and summarize text with an AI writing workspace
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing
AI translation for text, images, documents and speech in 100+ languages
AI translation for text, images, documents and speech in 100+ languages
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Professional AI translation for text, documents, images and audio
AI English speaking coach with instant pronunciation feedback

PTE practice tests with instant AI scoring and realistic mock exams
PTE practice tests with instant AI scoring and realistic mock exams

SpecialistOn-premise translation and speech recognition for enterprises
SpecialistOn-premise translation and speech recognition for enterprises