# DeepSeek vs FormalizeIt

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

| Metric | [DeepSeek](https://openaitools.app/tool/deepseek) | [FormalizeIt](https://openaitools.app/tool/formalizeit) |
| :--- | :--- | :--- |
| Website URL | https://www.deepseek.com | https://chromewebstore.google.com/detail/formalizeit/cknpomjgcpiikoconfeahlgikeidmdbi |
| Categories | Large Language Models (LLMs), Open Source AI Models, AI API, AI Chatbot | AI Email Assistant, AI Email Writer, AI Writing Assistants, AI Email Generator |
| 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 | 1.8 |
| Saved Count | 44 | 0 |
| 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)

## FormalizeIt

FormalizeIt targets a very specific annoyance: you know what you want to say, but the draft in your compose window sounds blunt, careless or too casual for the recipient. The add-on drops a button into Gmail's compose toolbar; press it and your text is sent to OpenAI, which returns a rewritten version that reads as more professional and more respectful while keeping the original intent. It is deliberately minimal — there is no dashboard, no template library and no tone picker, just one action on the draft you already wrote.

Because the extension uses OpenAI directly, you register with OpenAI and paste your own API key. That means your usage is billed by OpenAI rather than by the developer, and the extension itself can be installed at no cost. The trade-off is that you need an OpenAI account and basic comfort with API keys before it is useful.

The listing is small and has not been updated since August 2023, so treat it as a single-purpose utility rather than a maintained email suite. It handles the common case well: quick politeness and professionalism upgrades on short business emails, replies to managers or clients, and any situation where an informal draft needs to be presentable before it goes out.

**Pricing & Plans:** The extension is free to install. You supply your own OpenAI API key, so any model usage is billed by OpenAI at their standard API rates; the developer does not charge a subscription.

- **One-button rewrite in Gmail:** A magic-button action is added to the Gmail compose window, so you can rewrite the draft you are already writing without switching tabs or copying text elsewhere.
- **Professional and polite tone output:** The rewrite targets professionalism and respect, turning terse or overly casual phrasing into wording better suited to colleagues, managers and clients.
- **Powered by your own OpenAI key:** You connect the extension to OpenAI with your own API credentials, keeping usage costs transparent and under your control.
- **No learning curve:** There are no settings to configure beyond the API key and no new writing interface to learn — it works inside the Gmail compose box you already use.
- **Chrome-native install:** Installs from the Chrome Web Store as a small extension with a light footprint, and the developer discloses that it does not sell or misuse your data.

**Strengths:** Free to install and stays inside the Gmail compose window; Requires no new writing tool or workflow to learn; Uses your own OpenAI key, so costs stay transparent; Developer discloses that data is not sold or reused outside core functionality

**Limitations:** Requires an OpenAI account and a manually configured API key; No tone, length or style controls — one fixed professional rewrite; Last updated in August 2023 and has very few users, so long-term maintenance is uncertain

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

## Frequently Asked Questions

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

DeepSeek has 372,761,591 monthly visits, while FormalizeIt 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%; FormalizeIt 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). FormalizeIt: Freemium. The extension is free to install. You supply your own OpenAI API key, so any model usage is billed by OpenAI at their standard API rates; the developer does not charge a subscription.

## 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 | [Superhuman](https://openaitools.app/tool/superhuman) | 6,514,241 | +7.9% | Paid | The AI productivity suite with agents, email, and docs that work wherever you do | [.md](https://openaitools.app/tool/superhuman.md) |

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

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