# DeepSeek vs OpenSilver

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. OpenSilver records 2,710 monthly visits with -31.6% growth and Paid pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [OpenSilver](https://openaitools.app/tool/opensilver) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://opensilver.net |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI App Builder, AI Design Assistant, AI Developer Tools, AI Website Builder |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 372,761,591 | 2,710 |
| MoM Growth Rate | +4.3% | -31.6% |
| Primary Market | China | United States |
| Direct Visits | 291,585,405 | 1,065 |
| 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)

## OpenSilver

OpenSilver rebuilds the Microsoft Silverlight and WPF programming model on top of .NET and WebAssembly, so a codebase written in C#, VB or F# with XAML keeps working in Chrome, Firefox, Safari, Windows, macOS and Android. Teams that own a legacy Silverlight line-of-business application — or a Windows-only WPF desktop app — can move it to the browser while reusing over 95% of the original source, keeping screens visually identical so no user retraining or documentation rewrite is needed.

The framework ships with enterprise-oriented controls and library compatibility, including RIA Services and LightSwitch support, and the 3.3 release introduced an AI-enhanced drag-and-drop UI designer, the ability to host Blazor components directly inside XAML applications, and MAUI Hybrid integration. It also interoperates with Blazor, React and Angular when a team wants to mix stacks rather than migrate everything at once.

The core technology stack is free under the MIT license and can be downloaded as an SDK or tried instantly in the zero-setup XAML.io online IDE. For organizations that prefer not to run the migration themselves, Userware offers a commercial end-to-end migration service, support plans and pro services — which is where the paid side of the offering sits.

**Pricing & Plans:** The OpenSilver framework itself is free and open source under the MIT license, including the SDK and the online XAML.io IDE. Paid options come through Userware: commercial support plan subscriptions, pro services, and end-to-end WPF/Silverlight migration engagements quoted per project.

- **95%+ code reuse for legacy apps:** Recompile existing Silverlight or WPF C#, VB and F# code into a WebAssembly app that runs in any modern browser, avoiding a costly rewrite.
- **AI-enhanced visual designer:** OpenSilver 3.3 adds an AI-assisted drag-and-drop UI designer for building and editing XAML screens faster.
- **Blazor and MAUI interop:** Host Blazor components directly inside XAML applications and integrate with MAUI Hybrid, plus mix in React or Angular where useful.
- **Enterprise library compatibility:** Keeps support for RIA Services, LightSwitch and common third-party controls so established business apps keep working.
- **Zero-setup online IDE:** Try the framework immediately in the browser at XAML.io with no install and no signup, or download the SDK locally.

**Strengths:** Reuses the large majority of existing Silverlight/WPF code and preserves the pixel-level UI; Open-source MIT core with an installable SDK and a free in-browser IDE; Professional migration services and support plans available when you need them; Broad target coverage: all major browsers plus Windows, macOS and Android

**Limitations:** Targeted at teams with legacy .NET code rather than greenfield developers; Enterprise-grade migration and support are commercial and quoted per project; WebAssembly output can still be heavier than a hand-written modern front-end

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

## Frequently Asked Questions

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

DeepSeek has 372,761,591 monthly visits, while OpenSilver has 2,710. 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%; OpenSilver has -31.6%.

### 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). OpenSilver: Paid. The OpenSilver framework itself is free and open source under the MIT license, including the SDK and the online XAML.io IDE. Paid options come through Userware: commercial support plan subscriptions, pro services, and end-to-end WPF/Silverlight migration engagements quoted per project.

## 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 | [Lovable](https://openaitools.app/tool/lovable) | 31,052,090 | +3.8% | Freemium | Describe your idea in chat and Lovable turns it into a working app or website | [.md](https://openaitools.app/tool/lovable.md) |
| 8 | [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) |
| 9 | [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) |
| 10 | [Base44](https://openaitools.app/tool/base44) | 14,039,232 | +0.5% | Freemium, Paid, Contact for Pricing | Build working apps, websites, and AI agents by describing them | [.md](https://openaitools.app/tool/base44.md) |

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

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