Software Alternatives, Accelerators & Startups

ChatGPT VS ForthWrite

Compare ChatGPT VS ForthWrite and see what are their differences

ChatGPT logo ChatGPT

ChatGPT is a powerful, open-source language model.

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Visit Website
  • ChatGPT Landing page
    Landing page //
    2023-03-17
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

ChatGPT

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

ChatGPT features and specs

  • Versatility
    ChatGPT is capable of handling a wide array of tasks, from answering questions and generating text to assisting with coding and providing recommendations.
  • Accessibility
    The platform is easy to access through a web browser, making it convenient for users to utilize its capabilities from almost any device.
  • Natural Language Understanding
    ChatGPT is trained to understand and generate human-like text, which can make interactions feel more intuitive and natural.
  • Time Efficiency
    It can provide quick responses, helping users to get information or solve problems faster than traditional methods.
  • Cost-effective
    For many applications, ChatGPT can be a more affordable option compared to hiring professionals for specific tasks like content creation or customer support.

Possible disadvantages of ChatGPT

  • Accuracy
    While ChatGPT is generally reliable, it can sometimes provide incorrect or misleading information.
  • Context Limitation
    The model may struggle with understanding or maintaining context in long conversations, which can lead to irrelevant or repetitive responses.
  • Bias
    Since ChatGPT is trained on a large dataset containing human text, it can sometimes reflect or even amplify existing biases present in the data.
  • Security and Privacy
    Users must be cautious about sharing sensitive information, as data interactions with the platform may not be entirely secure or private.
  • Dependency
    Heavy reliance on ChatGPT for tasks can lead to a reduction in critical thinking and problem-solving skills among users.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Analysis of ChatGPT

Overall verdict

  • ChatGPT is generally considered a good tool for those seeking reliable information and conversational AI assistance. However, its effectiveness can vary based on the complexity of the questions and the need for nuanced understanding.

Why this product is good

  • ChatGPT (chat.openai.com) is praised for its ability to generate human-like text, provide contextually relevant information, and assist with a wide range of inquiries. It can understand and respond to prompts in a conversational manner, making it a useful tool for education, professional tasks, and everyday inquiries.

Recommended for

  • students looking for quick explanations or summaries
  • professionals needing assistance with drafting content or brainstorming
  • developers interested in AI interaction in apps
  • individuals seeking conversational engagement or entertainment
  • anyone needing support with general knowledge questions

ChatGPT videos

ChatGPT Review & Demo 2023 (ChatGPT Features, Benefits, Pros & Cons)

More videos:

  • Review - ChatGPT Asked Me to Review This!
  • Review - What is ChatGPT and How You Can Use It

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to ChatGPT and ForthWrite)
AI
100 100%
0% 0
Writing Tools
0 0%
100% 100
AI Writing
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing ChatGPT and ForthWrite.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What makes your product unique?

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Why should a person choose your product over its competitors?

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

How would you describe the primary audience of your product?

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

Share your experience with using ChatGPT and ForthWrite. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare ChatGPT and ForthWrite

ChatGPT Reviews

  1. MeganMills
    The Future

    ChatGPT is a friendly and powerful AI assistant that understands questions and gives clear, helpful answers almost instantly. It feels like talking to a knowledgeable and patient expert whether you need help with writing, learning new topics, solving problems, or even just brainstorming ideas. While itโ€™s not perfect and sometimes can misinterpret tricky prompts, overall itโ€™s impressive, easy to use, and surprisingly human-like in conversation. A great tool for students, professionals, and curious minds alike

    ๐Ÿ‘ Pros:    Quick response time
    ๐Ÿ‘Ž Cons:    Critical thinking
  2. my personal assistant at work

    I recently acquired access to ChatGPT, one of the most advanced language models out there, and I must say it has made a significant impact on my analytics work. It has definitely become an integral part of my daily use.

    Analytical support: ChatGPT does a great job of providing accurate and timely answers. It can also help me analyze large amounts of data. Efficiency: This product allows me to work more efficiently by using it to quickly find information or get recommendations.

  3. Word.Studio
    ยท Editor at Word.Studio ยท
    The essential AI everything tool.

    OpenAI continues to lead the way among the foundation model providers. I started using ChatGPT at 3.5 much like many other people. And although it was extremely powerful, it doesn't compare to what it has become with the new reasoning models like o1 and o3. These models produce outputs that are on a new level in terms of quality.

    I've been using custom GPT's extensively and they are very valuable once you get them dialed in to your own specific workflows. they recently rolled out projects which also have the ability to add custom instructions. Many of the custom GPT's that I've made do not need anything other than custom instructions. They don't need Web hooks or documents to reference, so a project will suffice. projects also allow connecting and switching between some of the newer reasoning models as well while custom GPT's are limited to the 4o model.

    Real time voice assistant is a game changer when you are on the go. And the human-like speech synthesis is incredible. uploading photos and giving the voice assistant access to live video from your phone has so many use cases that I have yet to realize.

    Many of the tools we have on WordStudio are powered by the OpenAI family of models via API. We recently hooked some of the tools to their o1 model and the improvements in the outputs are astounding.

    I've tried Anthropic's Claude and have experimented with DeepSeek, but I keep returning to ChatGPT for critical work.

    ๐Ÿ Competitors: Claude by Anthropic, Deepseek R1, Llama
    ๐Ÿ‘ Pros:    Active development|Powerful models|Api & webhooks|Multi modal|Canvas mode for long-form content and code|Text, image + video generator
    ๐Ÿ‘Ž Cons:    Image generator is lacking|Organization of chats is cumbersome

Best AI SEO Tools for Keyword Research in 2026
ChatGPT is not a dedicated SEO tool, but itโ€™s widely used in SEO workflows for content ideation, outline drafting, meta description writing, and keyword brainstorming.
Source: clusterview.ai
Best AI Book Writing Tools for KDP in 2026 (6 Tested)
ChatGPT can technically do almost anything in text, from outlining to drafting to suggesting formatting instructions. What it does not do is remember your entire book as a persistent object with chapters, versions, and layout. You still have to manage structure in a separate tool, then fix formatting in a layout app. Authors who rely on ChatGPT alone often end up with...
Best Whitelabel AI Virtual Assistants (Ranked & Reviewed)
I initially used the free plan in ChatGPT. It was helpful as a virtual assistant, from answering questions to summarizing information, to coding. I later used the paid version in my team for faster responses and to access the advanced GPT-4 models.
Top 10 AI Assistants for Productivity Compared in 2025
ChatGPT is a flexible ai assistant for work and home. You can use it to come up with ideas, write emails, and make summaries. It can even help you write code. ChatGPT is easy to talk to and can use plugins and APIs. Many people say it helps answer customer questions fast and makes people happier. But its knowledge only goes up to a certain date unless you turn on browsing....
Source: www.remio.ai
AdvisorZen vs. ChatGPT vs. Microsoft 365 Copilot: Which is the Best for Financial Advisors?
Cost-effectiveness is a critical factor when choosing AI-powered tools for wealth management. Financial advisors need solutions that provide high value without overburdening their budgets. Platforms like AdvisorZen, ChatGPT, and Microsoft 365 Copilot aim to deliver powerful features at competitive prices, helping advisors streamline operations, enhance client service, and...

ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

Social recommendations and mentions

Based on our record, ChatGPT seems to be more popular. It has been mentiond 845 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ChatGPT mentions (845)

  • Claude's Paid Subscribers Are Skyrocketing
    Anthropic ran Super Bowl ads that directly targeted OpenAI. The message: ChatGPT is showing you ads. Claude never will. - Source: dev.to / 3 months ago
  • How to Intercept Server-Sent Events in Chrome Extensions (MV3 Guide)
    { "manifest_version": 3, "name": "SSE Interceptor", "version": "1.0", "permissions": ["activeTab", "storage"], "content_scripts": [ { "matches": ["https://chat.openai.com/*", "https://chatgpt.com/*"], "js": ["content-isolated.js"], "run_at": "document_start" }, { "matches": ["https://chat.openai.com/*", "https://chatgpt.com/*"], "js": ["content-main.js"], ... - Source: dev.to / 4 months ago
  • How I Built an AI Suggestion Textbox with Angular Signal Forms
    AI suggestion textboxes are everywhere right now. From GitHub Copilot to ChatGPT, folks expect AI assistance when working with forms. Adding this capability to your forms doesn't have to be complicated. By creating a custom form control with Angular Signal Forms, you can integrate AI-powered suggestions seamlessly while maintaining proper form state management, request cancellation, and error handling. This... - Source: dev.to / 6 months ago
  • Ask HN: What Are You Working On? (January 2026)
    Top of my ideas now: add "ask your LLM" buttons to my newsletter card that opens ChatGPT/Perp/Claude and auto-fills a query. Sample links: Claude: https://claude.ai/new?q=Do+deep+research+on+a+person%2C+dvsj.in+and+tell+me+succinctly+why+I+should+be+friends+with+him. ChatGPT: https://chat.openai.com/?q=Do+deep+research+on+a+person%2C+dvsj.in+and+tell+me+succinctly+why+I+should+be+friends+with+him. Also working on... - Source: Hacker News / 6 months ago
  • ๐Ÿงฉ Runtime Snapshots #11 โ€” The Design Loop: From 'Make It Like That Site' to Pixel-Perfect Code
    Drop an image into Claude or ChatGPT asking it to "recreate this." The result? The LLM guesses styles. Is that padding 16px or 24px? Is that blue #3b82f6 or #2563eb? Is the shadow 0 2px 8px or 0 4px 12px? Pure hallucination. - Source: dev.to / 6 months ago
View more

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

What are some alternatives?

When comparing ChatGPT and ForthWrite, you can also consider the following products

Claude AI - Claude is a next generation AI assistant built for work and trained to be safe, accurate, and secure. An AI assistant from Anthropic.

Superhuman - Superhuman is an email management tool.

Jasper.ai - The Future of Writing Meet Jasper, your AI sidekick who creates amazing content fast!

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

Copy.ai - We have created the world's most advanced artificial intelligence copywriter that enables you to create marketing copy in seconds!

Lavender - Realtime coaching for sales emails.