# ChatYY vs DeepSeek

ChatYY records 0 monthly visits with — month-over-month growth and Freemium, Free pricing. DeepSeek records 372,761,591 monthly visits with +4.3% growth and Freemium pricing.

| Metric | [ChatYY](https://openaitools.app/tool/chatyy) | [DeepSeek](https://openaitools.app/tool/deepseek) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/chatyy/ennmnfichkhmcecpnllkjklgmfdcenlc | https://www.deepseek.com |
| Categories | AI Assistant, AI Art Generator, AI Writing Assistants | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot |
| Pricing Model | Freemium, Free | Freemium |
| Monthly Visits | 0 | 372,761,591 |
| MoM Growth Rate | — | +4.3% |
| Primary Market | Global | China |
| Direct Visits | 0 | 291,585,405 |
| Review Score | 3.8 | 4.8 |
| Saved Count | 0 | 44 |
| Supported Platforms | Browser Extension | Website |

## ChatYY

ChatYY is a browser extension that positions itself as a 'personal smart steward' — one assistant that follows you across every website. Its entry point is deliberately simple: a keyboard shortcut opens the chat panel, selecting text triggers an explanation or translation, and a library of preset topics keeps conversations moving when you are unsure what to ask.

Beyond chat, it bundles the tasks people most often leave their browser to perform. YouTube videos get a one-click summary and outline; PDFs become conversational documents; Google and Bing results gain an AI answer layer; and a drawing studio turns text prompts into images in the style of Midjourney, Stable Diffusion or DALL·E. The developer also advertises frictionless sign-in with no account barriers, and Android and iOS support beyond the desktop extension.

ChatYY is built on GPT-4 and Claude 2, according to its listing, and is offered free with optional in-app purchases. It is a small independent project published by an individual developer under the name biganwang2, with version 1.3.17 released in May 2024 and a perfect but tiny 5.0-star rating from three reviews.

**Pricing & Plans:** Free, with optional in-app purchases per the Chrome Web Store listing. No subscription price is published.

- **Quick summon chat box:** Press Ctrl+M or Cmd+M anywhere to summon the assistant, or highlight a word to get an instant explanation or translation.
- **YouTube summarization:** Generate a concise summary and outline of a long YouTube video so you can grasp the key points in seconds.
- **Chat with PDFs:** Open a PDF inside the extension and ask questions about its contents rather than reading every page.
- **AI drawing studio:** Turn a text prompt into an image, with workflows compared to Midjourney, Stable Diffusion and DALL·E by the developer.
- **Search and web enhancement:** Get AI answers layered into Google and Bing search results, and browse websites in real time inside the extension panel.
- **Writing and research help:** Write ad copy, blog articles and emails, or dig into academic topics, drawing on a rich library of preset conversation topics.

**Strengths:** Keyboard shortcut and text selection make it fast to invoke; Combines chat, summarization, PDF Q&A, image generation and search enhancement; YouTube video summaries save significant time on long content; Works in both Chrome-style desktop browsers and on Android and iOS

**Limitations:** Only 3 ratings so far, a small sample for judging reliability; Interface and listing text are primarily in Chinese; Requires in-app purchases for some capabilities; A relatively small independent developer with limited public documentation

[Profile (Markdown)](https://openaitools.app/tool/chatyy.md)

## DeepSeek

DeepSeek (Hangzhou DeepSeek Artificial Intelligence Co., Ltd.) is a frontier AI research organization that disrupted the global LLM market by pairing open-weight transparency with breakthrough Mixture-of-Experts (MoE) and reinforcement-learning reasoning efficiency. Following the landmark releases of DeepSeek-V3 and the peer-reviewed DeepSeek-R1 reasoning model, DeepSeek introduced the DeepSeek-V4 generation in 2026—featuring a hybrid attention architecture and a native 1-million-token context window across DeepSeek-V4-Pro (1.6T total parameters, 49B active per token) and DeepSeek-V4.1-Flash (284B total parameters, 13B active per token).

Users can interact with DeepSeek in three ways: completely free through the consumer web portal (chat.deepseek.com) and mobile apps with one-click toggles for deep thinking and live web search; via DeepSeek's hosted, OpenAI-compatible developer API; or by self-hosting DeepSeek's open-weight checkpoints (including V3, R1, Prover-V2, and distilled Qwen/Llama variants) on private infrastructure. The models excel at competitive mathematics, algorithm design, repository-level software engineering, and structured data extraction, with automatic context caching on the API that slashes repeated prompt costs by over 95%.

In late 2026, DeepSeek remains the price-performance benchmark for developers and automation workflows. While the consumer chat interface remains free without a mandatory $20/month subscription tier, the developer API transitioned in late 2026 to two primary endpoints—`deepseek-flash` and `deepseek-v4-pro`—with time-of-day pricing. Off-peak API calls cost just $0.15 per million input tokens ($0.003 on cache hits) and $0.60 per million output tokens on Flash, and $0.66 input / $1.98 output on V4-Pro, making it a fraction of the cost of comparable Western frontier models.

**Pricing & Plans:** Free web and mobile chat app at chat.deepseek.com; pay-as-you-go OpenAI-compatible API with off-peak rates at $0.15/1M input ($0.003 cache hit) and $0.60/1M output for deepseek-flash (V4.1-Flash), and $0.66/1M input ($0.022 cache hit) and $1.98/1M output for deepseek-v4-pro (peak weekday UTC hours bill at 2x).

- **DeepSeek-V4 Hybrid Attention & 1M Context:** 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.
- **Transparent Chain-of-Thought Reasoning:** 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.
- **Automatic Context Caching & Off-Peak API Pricing:** 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.
- **Free Consumer Web & Mobile Assistant:** Provides free access at chat.deepseek.com and on iOS/Android with document uploads, reasoning mode, and web search without paywalling core models.
- **Open-Weight Ecosystem & Self-Hosting Freedom:** Offers open weights for DeepSeek-V3, R1, Distill variants, and Prover models on Hugging Face and GitHub so enterprises can deploy within air-gapped environments.

**Strengths:** Completely free consumer web and mobile app with deep reasoning and web search included; Ultra-low API token rates ($0.15/$0.60 on Flash, $0.66/$1.98 on V4-Pro off-peak) with up to 98% savings on cached inputs; Drop-in OpenAI API compatibility makes switching or routing between models effortless; Strong open-weight lineage allows teams to self-host or fine-tune models without vendor lock-in

**Limitations:** Hosted API and web app store data on servers in China, prompting compliance restrictions for some Western enterprises and government agencies; Peak-hour API pricing (01:00–04:00 and 06:00–10:00 UTC on weekdays) doubles per-token costs compared to off-peak rates; Lacks native voice mode, video generation, and productivity suite integrations offered by ChatGPT and Google Gemini

[Profile (Markdown)](https://openaitools.app/tool/deepseek.md)

## Frequently Asked Questions

### How do ChatYY and DeepSeek compare in monthly traffic?

ChatYY has 0 monthly visits, while DeepSeek has 372,761,591. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ChatYY has a month-over-month growth rate of —; DeepSeek has +4.3%.

### How does pricing compare?

ChatYY: Freemium, Free. Free, with optional in-app purchases per the Chrome Web Store listing. No subscription price is published. DeepSeek: Freemium. Free web and mobile chat app at chat.deepseek.com; pay-as-you-go OpenAI-compatible API with off-peak rates at $0.15/1M input ($0.003 cache hit) and $0.60/1M output for deepseek-flash (V4.1-Flash), and $0.66/1M input ($0.022 cache hit) and $1.98/1M output for deepseek-v4-pro (peak weekday UTC hours bill at 2x).

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | Provides stronger multi-modal reasoning and agentic tools, but lacks DeepSeek's ultra-low-cost API pricing. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Google Gemini](https://openaitools.app/tool/gemini-gemini-advanced) | 2,637,398,242 | -0.1% | Freemium | Offers an enormous context window and deep Google ecosystem integration, but feels less specialized for pure reasoning tasks. | [.md](https://openaitools.app/tool/gemini-gemini-advanced.md) |
| 3 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Delivers superior long-form coding artifacts and nuanced writing, but lacks DeepSeek's specialized open-weight reasoning models. | [.md](https://openaitools.app/tool/claude-2.md) |
| 4 | [Grok](https://openaitools.app/tool/grok) | 203,846,050 | -0.8% | Freemium | Features real-time X social data integration, but is less cost-effective for dedicated developer coding workflows. | [.md](https://openaitools.app/tool/grok.md) |
| 5 | [Perplexity](https://openaitools.app/tool/perplexity-ai) | 88,310,223 | -3.7% | Freemium | Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models. | [.md](https://openaitools.app/tool/perplexity-ai.md) |
| 6 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Provides comparable open-weight foundation models and multilingual performance, but requires self-hosting or third-party inference setup. | [.md](https://openaitools.app/tool/qwen-4.md) |
| 7 | [Cursor](https://openaitools.app/tool/cursor) | 23,297,751 | +8.4% | Freemium | The AI coding agent for building ambitious software | [.md](https://openaitools.app/tool/cursor.md) |
| 8 | [Kimi AI](https://openaitools.app/tool/kimi-chat) | 19,632,261 | -23.4% | Free | Excels at ultra-long document analysis and research, but lacks the same level of open-weight developer community support. | [.md](https://openaitools.app/tool/kimi-chat.md) |
| 9 | [Ollama](https://openaitools.app/tool/ollama) | 9,421,973 | +4.3% | Free, Freemium, Paid | Enables running open-source models locally on consumer hardware, but lacks DeepSeek's cloud-scale hosted reasoning power. | [.md](https://openaitools.app/tool/ollama.md) |
| 10 | [Tencent Yuanbao](https://openaitools.app/tool/tencent-yuanbao) | 9,318,521 | -13.9% | Free | Tencent's free Hunyuan-powered assistant for chat, search, documents and images | [.md](https://openaitools.app/tool/tencent-yuanbao.md) |

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Source: https://openaitools.app/compare/chatyy-vs-deepseek

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)