# DeepSeek vs DET Practice

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. DET Practice records 115,015 monthly visits with +15.9% growth and Freemium pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [DET Practice](https://openaitools.app/tool/det-practice) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://www.detpractice.com |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Language Learning, AI Testing, AI Writing Assistants, AI Speech Recognition |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 372,761,591 | 115,015 |
| MoM Growth Rate | +4.3% | +15.9% |
| Primary Market | China | Vietnam |
| Direct Visits | 291,585,405 | 51,206 |
| Review Score | 4.8 | 4.3 |
| Saved Count | 44 | 2 |
| 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)

## DET Practice

DET Practice is a preparation platform built specifically for the Duolingo English Test, positioning itself as a Platinum Partner of the exam. Its centrepiece is a question bank of more than 18,000 items that is updated continuously, paired with model answers and explanations so learners can see not only what the correct response is but why a high-scoring answer works. The platform reports over 400,000 users and 40,000 mock tests taken.

The mock exam experience is designed to mirror the real test: adaptive difficulty, the same task types, and AI scoring that returns a detailed evaluation report within a few minutes. Alongside the mock tests sit dedicated speaking and writing correction services — covering tasks such as Write about the Photo, Interactive Writing, Writing Sample, Read Aloud, Listen then Speak and Speak about the Photo — where learners receive AI scoring combined with teacher guidance.

For learners who want structure, there are courses covering the DET speaking and writing sections developed by ESL instructors, plus a broader AI tutor that corrects grammar, translates across languages and helps generate or polish writing. DET Practice also bundles exam-day perks: members can claim a coupon for a discount on the actual DET fee, and results within 24 hours through a sponsor invite link. The site holds a 4.8/5 rating across more than 1,850 reviews, with feedback frequently highlighting question quality and the depth of mock exam reports.

**Pricing & Plans:** DET Practice is freemium: you can start free with Google or email and try core practice and mock tests. Paid membership tiers unlock correction services, courses and unlimited access, and the site notes that cancellations are possible at any time.

- **18,000+ question bank:** More than 18,000 practice questions refreshed daily, with high-scoring sample answers and detailed explanations for each item.
- **Full-length adaptive mock tests:** Adaptive mock exams that mirror the real DET format and difficulty, scored by AI with a detailed evaluation report in one to five minutes.
- **Speaking and writing AI correction:** AI scoring and teacher guidance for DET speaking and writing tasks, including Write about the Photo, Interactive Writing and Speaking Sample.
- **Guided DET courses:** Structured video and text courses covering DET speaking and writing sections, built by ESL experts for comprehensive mastery.
- **All-in-one AI tutor:** An AI tutor that corrects grammar, translates between languages and polishes or generates writing tailored specifically to the Duolingo English Test.

**Strengths:** Very large, continuously updated question bank with explanations and model answers; Adaptive mock exams closely modelled on the real DET format, with AI scoring and detailed reports; Human-backed as well as AI correction for speaking and writing, which covers the hardest sections to self-assess; Recognised Platinum Partner status plus member coupons on the real test fee and 24-hour result routing

[Profile (Markdown)](https://openaitools.app/tool/det-practice.md)

## Frequently Asked Questions

### How do DeepSeek and DET Practice compare in monthly traffic?

DeepSeek has 372,761,591 monthly visits, while DET Practice has 115,015. 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%; DET Practice has +15.9%.

### 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). DET Practice: Freemium. DET Practice is freemium: you can start free with Google or email and try core practice and mock tests. Paid membership tiers unlock correction services, courses and unlimited access, and the site notes that cancellations are possible at any time.

## 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) |

---
Source: https://openaitools.app/compare/deepseek-vs-det-practice

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