# DeepSeek vs Side Space

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. Side Space records 0 monthly visits with 0% growth and Freemium, Paid pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [Side Space](https://openaitools.app/tool/side-space) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://sidespace.lemonsqueezy.com |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Browsers, AI Productivity Tools, AI Assistant |
| Pricing Model | Freemium | Freemium, Paid |
| Monthly Visits | 372,761,591 | 0 |
| MoM Growth Rate | +4.3% | 0% |
| Primary Market | China | Global |
| Direct Visits | 291,585,405 | 0 |
| Review Score | 4.8 | 4.2 |
| Saved Count | 44 | 0 |
| Supported Platforms | Website | Website |

## 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)

## Side Space

Modern browsers hide most of your work behind a single horizontal strip of shrinking tabs. Side Space takes the opposite approach: it moves the tab list into a vertical sidebar, where titles, favicons and grouping stay legible no matter how many pages you have open. The result is a browser that reads more like a file tree than a stack of postage stamps.

The extension leans on AI-assisted grouping to keep things tidy. Instead of manually dragging every new tab into place, related pages get clustered together, and you can refine the arrangement with nesting and drag-and-drop when you want a specific structure. It is distributed for Chromium-based browsers, with Chrome, Brave and Edge named as supported targets.

Side Space is sold as a one-time lifetime license through the Side Space Store, which is hosted on Lemon Squeezy and currently lists the lifetime license at $79.00, alongside a Subscribe option. That model suits people who keep a lot of tabs open and prefer a single purchase over a recurring fee.

**Pricing & Plans:** Side Space is sold through the Side Space Store on Lemon Squeezy. The storefront currently shows a Side Space Lifetime License at $79.00 as a one-time purchase, and also displays a Subscribe option. Because it is a paid, one-time-license product rather than a metered subscription, there are no per-seat monthly charges advertised on the tracked page.

- **Vertical tab sidebar:** Move your open tabs out of the cramped top bar and into a full-height sidebar where titles and favicons are easy to read.
- **AI-powered tab grouping:** Let the extension cluster related tabs automatically with AI, so research or project sessions stay grouped without manual sorting.
- **Nesting and drag-and-drop:** Nest tabs under parent tabs and drag them between groups to mirror how you actually think about your work.
- **Chrome, Brave and Edge support:** Built for Chromium-based browsers including Chrome, Brave and Edge, so your setup travels across the browsers you already use.
- **One-time lifetime license:** Buy once through the Lemon Squeezy storefront instead of paying a recurring subscription, with a Subscribe option available if you prefer.

**Strengths:** Makes long tab titles fully readable in a vertical sidebar; AI-assisted grouping reduces the manual work of tidying tabs; Nesting and drag-and-drop support flexible personal organisation; Works across Chrome, Brave and Edge

**Limitations:** Lifetime license is a one-time purchase rather than a low monthly plan, which may put off casual users; Only useful if you keep many tabs open; light browser users may not see the benefit; The purchase page is hosted on Lemon Squeezy, so there is no long marketing site with extensive documentation on the tracked URL; Availability depends on stores supporting vertical tabs in Chrome, Brave and Edge

[Profile (Markdown)](https://openaitools.app/tool/side-space.md)

## Frequently Asked Questions

### How do DeepSeek and Side Space compare in monthly traffic?

DeepSeek has 372,761,591 monthly visits, while Side Space 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%; Side Space has 0%.

### 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). Side Space: Freemium, Paid. Side Space is sold through the Side Space Store on Lemon Squeezy. The storefront currently shows a Side Space Lifetime License at $79.00 as a one-time purchase, and also displays a Subscribe option. Because it is a paid, one-time-license product rather than a metered subscription, there are no per-seat monthly charges advertised on the tracked page.

## 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 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) |

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Source: https://openaitools.app/compare/deepseek-vs-side-space

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