# Gmail GPT Assistant vs HyperWrite

Gmail GPT Assistant records 0 monthly visits with — month-over-month growth and Contact for Pricing pricing. HyperWrite records 255,429 monthly visits with +34.4% growth and Freemium pricing.

| Metric | [Gmail GPT Assistant](https://openaitools.app/tool/gmail-gpt-assistant) | [HyperWrite](https://openaitools.app/tool/hyperwrite-ai) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/gmail-gpt-assistant/lkobbdfelinbdcfdmlkoicgbgmakihhc | https://www.hyperwriteai.com |
| Categories | AI Email Assistant, AI Email Generator, AI Reply, AI Email Writer | AI Writing Assistants, AI Text Generator, AI Research Tool, AI Article Summarizer |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 0 | 255,429 |
| MoM Growth Rate | — | +34.4% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 107,719 |
| Review Score | 1.8 | 3.9 |
| Saved Count | 0 | 8 |
| Supported Platforms | Browser Extension | Website |

## Gmail GPT Assistant

Gmail GPT Assistant is one of the earliest wave of Gmail add-ons built on top of OpenAI's language models. It was created by independent developer Clément Duveau and published as an open-source project, with the complete code available on GitHub. The mechanism is deliberately minimal: a new button appears in Gmail, it reads the email you want to answer, and it pastes an AI-generated reply into a fresh draft.

Because the code is public, this extension appeals to people who want to see how an AI email assistant works under the hood before trusting it with their inbox. The scope is narrow compared with commercial alternatives - there is no template library, no translation panel, no summary feature. It does one job: turn an incoming message into a starting draft.

The trade-off is maturity. The store listing shows version 0.2, last updated in March 2023, with a very small user base and no ratings yet. That is not evidence the extension is broken, but it does mean the project has not been actively modernised as newer, cheaper and faster OpenAI models arrived. If you value transparency and a single-purpose tool over breadth of features, it still does exactly what it promises.

**Pricing & Plans:** Free extension. The Chrome Web Store listing is in the Contact for Pricing model only because the developer supplies no commercial tiers; usage depends on your own OpenAI access.

- **Draft replies from an open thread:** Click the extension button on any message and it generates an answer based on the previous email in the thread.
- **Automatic draft creation:** A new Gmail draft is opened for you with the generated text already pasted in, ready for editing.
- **Open-source codebase:** The full source is public on GitHub, so you can inspect exactly what the extension sends and how it works.
- **Bilingual interface:** The listing ships with English and French localisation.

**Strengths:** Completely free to install with no subscription tier; Open-source code you can audit on GitHub; Extremely simple workflow: one button, one draft, one paste; Lightweight at roughly 1 MB

**Limitations:** Last updated in 2023 and built around the older GPT-3 / DaVinci generation; Tiny user base and no ratings makes quality harder to judge; No templates, translation, summarisation or other conveniences

[Profile (Markdown)](https://openaitools.app/tool/gmail-gpt-assistant.md)

## HyperWrite

HyperWrite positions itself as a predictive AI writing assistant that follows you across the web. Through its Chrome extension, it offers TypeAhead suggestions that complete sentences as you type inside Gmail, Google Docs, and other web editors, alongside AutoWrite for generating paragraphs from a short instruction. An email responder drafts full replies from a few keywords, which is a common productivity win for people who live in their inbox.

Beyond the assistant itself, the product ships a large library of pre-built tools covering rewriting, summarization, explaining complex topics in plain language, speeches, and more. Users can also assemble custom AI tools that chain steps together for repeated workflows. HyperWrite Scholar adds a research layer by searching scholarly articles and papers, so generated text can be grounded in current, citation-backed information rather than the assistant's memory alone.

Pricing is subscription-based with a free entry point alongside paid tiers. Paid plans increase the monthly AI message allowance, unlock custom personas that mimic your writing style, and give unlimited TypeAhead suggestions. Higher tiers remove the message cap entirely and provide early access to experimental writing and agent features.

**Pricing & Plans:** Freemium. A free tier introduces the assistant and a limited message allowance; Premium is listed around $19.99/month with 250 AI messages, citations, real-time info, and 3 custom personas; Ultra around $44.99/month adds unlimited AI messages, 10 personas, and early access to experimental features. Annual billing is available at a discount.

- **TypeAhead autocomplete:** Context-aware sentence completions appear as you type in Gmail, Google Docs, and other sites through the Chrome extension.
- **AutoWrite and rewriting tools:** Generate a paragraph from a short prompt or rewrite existing text in a new tone while preserving meaning.
- **Citation-backed research:** HyperWrite Scholar searches millions of scholarly articles so drafts can include factual, properly cited information.
- **Email responder:** Turn a few keywords into a complete, ready-to-send email reply without switching tabs.
- **Custom AI tools:** Build your own reusable AI tools that chain prompts and steps for recurring workflows.

**Strengths:** Works directly inside the browser via a Chrome extension, so no app switching; Combines writing help with citation-backed research in one subscription; Large catalog of ready-made tools plus custom tool building; Essays, emails, and rewrites share one account and one message allowance

**Limitations:** Message caps on lower tiers can be limiting for heavy users; Best autocomplete experience depends on using the Chrome extension; Full capabilities require a paid plan beyond the free allowance

[Profile (Markdown)](https://openaitools.app/tool/hyperwrite-ai.md)

## Frequently Asked Questions

### How do Gmail GPT Assistant and HyperWrite compare in monthly traffic?

Gmail GPT Assistant has 0 monthly visits, while HyperWrite has 255,429. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Gmail GPT Assistant has a month-over-month growth rate of —; HyperWrite has +34.4%.

### How does pricing compare?

Gmail GPT Assistant: Contact for Pricing. Free extension. The Chrome Web Store listing is in the Contact for Pricing model only because the developer supplies no commercial tiers; usage depends on your own OpenAI access. HyperWrite: Freemium. Freemium. A free tier introduces the assistant and a limited message allowance; Premium is listed around $19.99/month with 250 AI messages, citations, real-time info, and 3 custom personas; Ultra around $44.99/month adds unlimited AI messages, 10 personas, and early access to experimental features. Annual billing is available at a discount.

## 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 | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [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) |
| 4 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Specializes in robust grammar correction, spelling, and tone adjustments across apps, but lacks generative predictive writing autocomplete. | [.md](https://openaitools.app/tool/grammarly.md) |
| 5 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Excels at sentence paraphrasing, summarization, and citation formatting, but lacks HyperWrite's active predictive browser autocompletion. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 6 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) |
| 7 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers an all-in-one browser extension with chat, writing assistance, and search capabilities, though less focused on predictive autocomplete. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 8 | [Sider](https://openaitools.app/tool/sider-ai-extension) | 2,644,740 | -10.6% | Freemium | Provides a browser extension sidebar integrating multiple frontier models and writing tools, offering broader model choice than HyperWrite. | [.md](https://openaitools.app/tool/sider-ai-extension.md) |
| 9 | [Jenni](https://openaitools.app/tool/jenni) | 1,498,133 | +5.2% | Freemium | Tailored specifically for academic and research writing with source citations and autocomplete, rivaling HyperWrite's scholarly tools. | [.md](https://openaitools.app/tool/jenni.md) |
| 10 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Bundles multiple leading LLMs into a browser extension for web summarization and writing, similar to HyperWrite's research assistant. | [.md](https://openaitools.app/tool/merlin-ai.md) |

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Source: https://openaitools.app/compare/gmail-gpt-assistant-vs-hyperwrite-ai

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