GPT4Office (Gravity Storm Software)
AI-powered Microsoft Office add-ins and a Windows transcription app from Gravity Storm Software, built on OpenAI GPT, DALL-E and Whisper.
What is GPT4Office (Gravity Storm Software)?
GPT4Office is the product range from Gravity Storm Software, LLC, a San Diego firm that has built Microsoft Office add-ins since 1999. Its flagship Word Express add-in brings OpenAI GPT, DALL-E and Whisper into desktop Microsoft Word for text generation, image creation and audio transcription. The company also offers GPT4Audio, a Windows desktop app for speech-to-text, text-to-speech, dictation and multilingual translation. Both products run on Windows and connect to OpenAI using the user's own API key.
Key Features
Word Express add-in
Adds GPT text generation, DALL-E image creation and Whisper transcription directly inside desktop Microsoft Word
Text generation tools
Write, complete, summarise, rephrase, expand and translate document text using GPT
Image generation
Produces images from text prompts via DALL-E 2 and inserts them into documents
GPT4Audio app
Windows desktop application for speech-to-text transcription and text-to-speech across multiple languages
Real-time dictation
Speak into a microphone to generate written text and an audio recording at the same time
Embedded ChatGPT
Loads OpenAI ChatGPT or ChatGPT Plus as a panel within the Office environment
Broad Word compatibility
Works with desktop Microsoft Word 2010, 2013, 2016, 2019 and 365 on Windows
Pros & Cons
Advantages
- Integrates AI directly into the familiar desktop Microsoft Office interface rather than a separate web app.
- Supports older Microsoft Word versions back to 2010, which many newer AI tools ignore.
- Combines text, image and audio AI features in a single add-in rather than scattering them.
- Backed by an established vendor that has built Office add-ins since 1999.
- GPT4Audio offers a free download, so users can try transcription before committing.
Limitations
- Limited to Windows desktop, with no Mac, mobile or web versions available.
- Requires users to supply their own OpenAI API key and pay OpenAI usage costs separately.
- The website serves an invalid TLS certificate for its hostname, which can trigger browser security warnings.
- Public pricing detail is sparse and varies across products, so buyers may need to check the purchase pages directly.
Use Cases
Writers and copywriters drafting marketing copy, articles or creative content without leaving Microsoft Word.
Students and researchers summarising, rephrasing and expanding documents during writing.
Professionals transcribing recorded meetings or interviews into text with GPT4Audio.
Multilingual teams translating audio files or dictation between languages.
Office users who want AI assistance inside their existing desktop Microsoft Office workflow rather than a browser tool.