
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. Thesify records 116,873 monthly visits with -5.7% growth and Freemium pricing.

AI pre-submission reviewer and writing coauthor for researchers
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | deepseek.com | thesify.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 372.76M (372,761,591) | 116.87K (116,873) |
| MoM Traffic Delta | +15.36M (+4.3%) | -7.11K (-5.7%) |
| Primary Market & Share | 🇨🇳 China (50.5%) | 🇺🇸 United States (19.9%) |
| Direct Visits / mo | 291.59M | 28.26K |
| User Rating | 4.8 | 4.2 |
| 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.

AI pre-submission reviewer and writing coauthor for researchers
Upload a draft as PDF or Word and get a full reviewer-style report covering argument, methodology, evidence, structure and clarity, with findings graded by severity.
Relevant articles are matched from an index of 200M+ peer-reviewed papers, and the platform explicitly avoids fabricating citations that do not exist.
Get a ranked shortlist of venues matched to your manuscript, with fit, impact factor and selectivity detail to help you choose where to submit.
Agents search sources, read your PDFs and edit your document, with automatic version history, live co-author collaboration and LaTeX-to-PDF compilation.

Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing.
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.
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.
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.
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.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace

Free / Open-sourceProvides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup.
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
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.
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.
Free / Open-sourceEnables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power.

Academic proofreading, plagiarism checking and AI-powered writing tools in one place
Academic proofreading, plagiarism checking and AI-powered writing tools in one place

AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers