
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
#1DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. UPDF AI records 1,050,387 monthly visits with -7.2% growth and Freemium, Free Trial, Paid pricing.

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | deepseek.com | updf.com |
| Pricing Model | Freemium | Freemium, Free Trial, Paid |
| Monthly Visits | 372.76M (372,761,591) | 1.05M (1,050,387) |
| MoM Traffic Delta |
| +15.36M (+4.3%) |
| -81.94K (-7.2%) |
| Primary Market & Share | 🇨🇳 China (50.5%) | 🇺🇸 United States (10.2%) |
|---|
| Direct Visits / mo | 291.59M | 196.82K |
|---|
| User Rating | 4.8 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Leverages a sparse Mixture-of-Experts architecture (49B active parameters out of 1.6T on V4-Pro) to process up to 1 million tokens with minimal latency and memory overhead.
Pioneered by DeepSeek-R1 and integrated into V3.2 and V4 thinking modes, exposing step-by-step self-verification for complex math, logic, and code debugging.
Drops input token costs to $0.003/1M on Flash and $0.022/1M on V4-Pro for cache hits, with 50% lower rates during off-peak UTC hours.
Provides free access at chat.deepseek.com and on iOS/Android with document uploads, reasoning mode, and web search without paywalling core models.

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
Edit text and images directly, annotate ideas, add links and watermarks, and use OCR to make scanned PDFs editable — all inside one app instead of switching tools.
Summarise, translate, explain, or chat with a PDF across the entire file, a single page, or a saved page range, so long documents stay manageable and answers stay focused.
Ready-made agents for researcher, contract, resume, finance, and study workflows analyse documents, surface risks and key terms, and suggest improvements.
Convert PDFs to Word, Excel, PowerPoint, or images, merge, split, crop, and rotate pages, and batch-process multiple files in a single pass.

Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
#1
Offers an enormous context window and deep Google ecosystem integration, but feels less specialized for pure reasoning tasks.
#2Delivers superior long-form coding artifacts and nuanced writing, but lacks DeepSeek's specialized open-weight reasoning models.

Features real-time X social data integration, but is less cost-effective for dedicated developer coding workflows.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.

Free / Open-sourceProvides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup.

SpecialistThe AI coding agent for building ambitious software

SpecialistExcels at ultra-long document analysis and research, but lacks the same level of open-weight developer community support.
Free / Open-sourceEnables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power.

SpecialistTailored specifically for academic research literature, offering deeper scholarly search and paper analysis than general PDF tools.

Offers robust free PDF editing and AI chat capabilities without subscription paywalls, though cloud features are more limited.
Provides heavy-duty desktop PDF editing and OCR alongside built-in AI document summarization and chat tools.
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
Offers an enormous context window and deep Google ecosystem integration, but feels less specialized for pure reasoning tasks.
Delivers superior long-form coding artifacts and nuanced writing, but lacks DeepSeek's specialized open-weight reasoning models.
Features real-time X social data integration, but is less cost-effective for dedicated developer coding workflows.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Free / Open-sourceProvides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup.
SpecialistThe AI coding agent for building ambitious software
SpecialistExcels at ultra-long document analysis and research, but lacks the same level of open-weight developer community support.
Free / Open-sourceEnables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power.
SpecialistTailored specifically for academic research literature, offering deeper scholarly search and paper analysis than general PDF tools.
Provides heavy-duty desktop PDF editing and OCR alongside built-in AI document summarization and chat tools.