# DeepSeek vs SummifyYT (Summarize YouTube Comments)

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. SummifyYT (Summarize YouTube Comments) records 0 monthly visits with — growth and Free pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [SummifyYT (Summarize YouTube Comments)](https://openaitools.app/tool/summifyyt) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://chrome.google.com/webstore/detail/summifyyt-summarize-youtu/mcjgidambippeaajehcfimmephgholco |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Youtube Summary, AI Summarizer, AI Chatbot, AI Assistant |
| Pricing Model | Freemium | Free |
| Monthly Visits | 372,761,591 | 0 |
| MoM Growth Rate | +4.3% | — |
| Primary Market | China | Global |
| Direct Visits | 291,585,405 | 0 |
| Review Score | 4.8 | 1.9 |
| Saved Count | 44 | 4 |
| Supported Platforms | Website | Browser Extension |

## 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)

## SummifyYT (Summarize YouTube Comments)

SummifyYT is a browser extension for people who want to understand how an audience reacted to a video without manually reading through a comment thread that may run to thousands of entries. It embeds directly into the YouTube watch page, adds a summary button to the interface, and returns a short digest of the comment section covering the points viewers repeat, praise, or push back on.

Unlike many summarizers that charge for API usage, SummifyYT leans on the ChatGPT session already active in your browser. That design keeps the tool free, but it also means you need to be logged in to ChatGPT for it to work at all. The extension exposes a small settings panel where you can switch on GPT-4, toggle auto-start so a summary is generated the moment a watch page loads, and pick the language you want the summary written in.

The extension has been on the Chrome Web Store for years and is small (roughly 140 KB). Development has slowed — the last published update dates to April 2023 — and the rating sits at a modest 2.8 out of 5. It remains a functional, free option for a quick read on a comment section, especially for creators and researchers triaging audience feedback at scale.

**Pricing & Plans:** Completely free. The extension itself costs nothing and has no in-app purchases; it reuses your existing ChatGPT account, so any costs are whatever your ChatGPT plan already covers.

- **Comment section summarization:** Turns a long YouTube comment thread into a short, readable digest of the main points viewers are making.
- **Embedded on the watch page:** Adds its controls directly to YouTube's UI, so you can trigger a summary without leaving the video you are watching.
- **Language selection:** Lets you choose which language the generated summary is written in, useful for multi-language audiences.
- **GPT-4 toggle and auto-start:** An optional setting switches summarization to GPT-4, and another can fire the summary automatically whenever a watch page loads.
- **Uses your ChatGPT session:** No separate API key or subscription — the extension works through the ChatGPT login you already have in the browser.

**Strengths:** Free to use with no subscription or API key; Lives inside YouTube, so no copy-pasting links between tools; Adjustable summary language and a GPT-4 option; Very small download size and quick to install

**Limitations:** Requires you to be signed in to ChatGPT, so it is unusable without an account; Last updated in April 2023 and receives infrequent maintenance; Modest user rating (2.8/5) suggests inconsistent results for some users

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

## Frequently Asked Questions

### How do DeepSeek and SummifyYT (Summarize YouTube Comments) compare in monthly traffic?

DeepSeek has 372,761,591 monthly visits, while SummifyYT (Summarize YouTube Comments) has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

DeepSeek has a month-over-month growth rate of +4.3%; SummifyYT (Summarize YouTube Comments) has —.

### How does pricing compare?

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). SummifyYT (Summarize YouTube Comments): Free. Completely free. The extension itself costs nothing and has no in-app purchases; it reuses your existing ChatGPT account, so any costs are whatever your ChatGPT plan already covers.

## 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 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) |

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

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