# DeepSeek vs GPTZero: AI Detection & Writing Replay

DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. GPTZero: AI Detection & Writing Replay records 0 monthly visits with — growth and Freemium pricing.

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [GPTZero: AI Detection & Writing Replay](https://openaitools.app/tool/origin-by-gptzero) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://chrome.google.com/webstore/detail/origin-by-gptzero-chatgpt/kgobeoibakoahbfnlficpmibdbkdchap |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Detector, AI Content Detector, Large Language Models (LLMs), AI Checker |
| Pricing Model | Freemium | Freemium |
| 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 | 4.5 |
| 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)

## GPTZero: AI Detection & Writing Replay

This extension, formerly marketed as Origin by GPTZero, is the in-browser arm of GPTZero's writing-integrity platform. It is aimed at teachers, students and researchers who need to know not only whether text looks machine-written but how a document took shape. Installed on Chrome, it works inside Google Docs and other writing surfaces, running detection and feedback where the work actually happens rather than in a separate dashboard.

The Google Docs experience adds four main capabilities: live AI-detection checks as you type, customisable written feedback inserted as Google Docs comments, a writing video-replay report with typing-pattern analysis, and bibliography/citation checking with research-focused fact checks. The replay feature reconstructs the writing process — showing edits, pastes and writing bursts — and in multi-editor documents it can indicate how much each contributor wrote, which is useful when several people collaborate on one file. Because it constantly screens large pastes as well as natural typing patterns, it doubles as a plagiarism-style review aid.

GPTZero Inc. states that the extension supports enterprise-grade security and privacy controls with SOC2 and FERPA compliance, and it has been cited by outlets including The New Yorker, The New York Times and Harvard Business Review. The extension itself is free to install from the Chrome Web Store; the wider GPTZero platform offers additional paid features. It is an independent third-party product and is not produced or endorsed by Google or OpenAI.

**Pricing & Plans:** Free to install and use from the Chrome Web Store. Some deeper reporting and institutional features live in GPTZero's wider platform, which uses separate paid plans.

- **Live AI detection in Google Docs:** Run AI-detection checks continuously as a document is written, not just after it is finished.
- **Writing video replay:** Play back how a document was written, edited and pasted, with typing-pattern analysis and multi-user contribution percentages.
- **Citation and bibliography check:** Flag hallucinated or inaccurate references, uncited claims and plagiarism, then suggest better sources.
- **Customisable live feedback:** Upload a rubric and assignment details so feedback is drafted directly into Google Docs comments.
- **Built for classrooms and institutions:** Compliance-oriented design with SOC2 and FERPA alignment, used by teachers who add it to their syllabus.

**Strengths:** Runs inside Google Docs where the writing actually happens; Writing replay reveals process, not just a final AI-likelihood score; Corroborates originality with citation and bibliography checks; Backed by a well-known vendor cited in major press, with SOC2 and FERPA alignment

**Limitations:** AI-detection scores are probabilistic and should not be treated as definitive proof; Deeper reporting and admin features push you toward GPTZero's paid platform; Requires meaningful permission access to documents and personal data

[Profile (Markdown)](https://openaitools.app/tool/origin-by-gptzero.md)

## Frequently Asked Questions

### How do DeepSeek and GPTZero: AI Detection & Writing Replay compare in monthly traffic?

DeepSeek has 372,761,591 monthly visits, while GPTZero: AI Detection & Writing Replay 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%; GPTZero: AI Detection & Writing Replay 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). GPTZero: AI Detection & Writing Replay: Freemium. Free to install and use from the Chrome Web Store. Some deeper reporting and institutional features live in GPTZero's wider platform, which uses separate paid plans.

## 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 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | AI content detection and a full writing toolkit in one place | [.md](https://openaitools.app/tool/zerogpt.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 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | AI detection and writing verification built for schools and editors | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 10 | [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) |

---
Source: https://openaitools.app/compare/deepseek-vs-origin-by-gptzero

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