
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. Speak records 46,150 monthly visits with -66.2% growth and Free Trial pricing.

Language learning built around speaking, powered by AI conversation practice
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | lightpdf.com | usespeak.com |
| Pricing Model | Freemium | Free Trial |
| Monthly Visits | 1.74M (1,742,568) | 46.15K (46,150) |
| MoM Traffic Delta | -314.58K (-15.3%) | -90.37K (-66.2%) |
| Primary Market & Share | 🇮🇳 India (24.9%) | 🇰🇷 South Korea (25.6%) |
| Direct Visits / mo | 442.07K | 14.47K |
| User Rating | 4.2 | 4.6 |
| Supported Platforms | Website | Website |

Free AI-powered PDF editor, converter and reader for every device
Upload a PDF and ask questions in natural language, follow up on details and see which passages the answers came from. A separate chat mode works with YouTube videos.
Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact.
Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically.
Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate.

Language learning built around speaking, powered by AI conversation practice
The Speak Tutor holds a real back-and-forth conversation with you in the target language and gives feedback on what actually matters, as many times as you want.
Speak flags pronunciation and phrasing problems as you speak, so you can correct habits before they set in.
Every lesson is built around the phrases and patterns native speakers use in real situations, avoiding textbook sentences and grammar drills.
The app adapts lesson order and content to your level and goals, with Premium Plus adding Made for You lessons and review built from your own mistakes.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI'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.

SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.

Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.

Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.
Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities.
AI English speaking coach with instant pronunciation feedback

Learn a new language by talking to lifelike AI tutors
Learn a new language by talking to lifelike AI tutors
Practice speaking a new language with an AI conversation partner
Practice speaking a new language with an AI conversation partner
Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.