# DeepSeek vs OETStudy

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. OETStudy records 4,738 monthly visits with +264.2% growth and Free pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [OETStudy](https://openaitools.app/tool/oetstudy-com) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://oetstudy.com |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Language Learning, AI Writing Assistants, AI Speech Recognition, AI Testing |
| Pricing Model | Freemium | Free |
| Monthly Visits | 372,761,591 | 4,738 |
| MoM Growth Rate | +4.3% | +264.2% |
| Primary Market | China | United States |
| Direct Visits | 291,585,405 | 1,537 |
| Review Score | 4.8 | 4.4 |
| Saved Count | 44 | 1 |
| 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)

## OETStudy

OETStudy is an independent study platform built around the Duolingo English Test, an online proficiency exam many universities accept. Its central promise is exam-style practice combined with automated feedback: learners work through sections covering speaking, writing, listening, and reading, then receive AI-generated scoring and suggestions aimed at pushing them toward a higher band.

The content side is substantial. The platform advertises more than 15,000 practice questions organised by question type and difficulty, so you can drill specific task formats rather than only taking full mock tests. Around that core sit study tools: CEFR-based vocabulary assessment, personal word lists clustered from your practice data, performance statistics, and score analysis that flags weak areas. There is also a community element, with a study group of active users for shared preparation.

The pricing model is generous for a test-prep resource, offering free practice questions and basic features, with premium AI scoring and deeper analytics available for full preparation. One thing to note: OETStudy states plainly that it is not endorsed by or affiliated with Duolingo, so it should be treated as third-party preparation support rather than an official source of DET scores.

**Pricing & Plans:** OETStudy offers free practice questions and basic features, with premium features covering comprehensive preparation such as AI scoring and detailed analytics. No credit card is required to start.

- **15,000+ practice questions:** A large bank of DET-style items spanning speaking, writing, listening, and reading, graded by difficulty so you can practise at the level you need.
- **AI speaking and writing scoring:** Speaking and writing submissions are scored automatically, evaluating pronunciation, fluency, grammar, and content structure with suggestions for improvement.
- **CEFR vocabulary tools:** Check your vocabulary level against CEFR bands and build word lists clustered around the question types you practise most.
- **Progress analytics:** Practice statistics and score analysis highlight weak areas and show how your performance changes over time.
- **Targeted question drills:** Focus practice on the specific DET task types where you need the most improvement rather than working through everything equally.

**Strengths:** Large, DET-aligned question bank across all four sections; AI scoring provides instant speaking and writing feedback; CEFR and vocabulary tools support longer-term language growth; Free tier lets you practise before paying for premium features

**Limitations:** Some content and features are JS-dependent and may not render on older browsers; Premium scoring and analytics sit behind the free practice tier; AI scoring is a practice aid and not the official DET result

[Profile (Markdown)](https://openaitools.app/tool/oetstudy-com.md)

## Frequently Asked Questions

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

DeepSeek has 372,761,591 monthly visits, while OETStudy has 4,738. 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%; OETStudy has +264.2%.

### 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). OETStudy: Free. OETStudy offers free practice questions and basic features, with premium features covering comprehensive preparation such as AI scoring and detailed analytics. No credit card is required to start.

## 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 | [PTE APEUni](https://openaitools.app/tool/apeuni-com) | 2,212,623 | +11.2% | Free | Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing | [.md](https://openaitools.app/tool/apeuni-com.md) |

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Source: https://openaitools.app/compare/deepseek-vs-oetstudy-com

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