ChatGPT records 6,048,022,723 monthly visits with +2.2% month-over-month growth and Freemium pricing. Write Brain records 0 monthly visits with 0% growth and Freemium pricing.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
One-click grammar, clarity, tone, and translation wherever you type on the web
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chatgpt.com | writebrain.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 6.05B (6,048,022,723) | 0 (0) |
| MoM Traffic Delta | +127.43M (+2.2%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (21.7%) | 🌐 Global (—) |
| Direct Visits / mo | 4.44B | 0 |
| User Rating | 4.8 | 4.1 |
| Supported Platforms | Website | Website |
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Automatically routes prompts or lets users select between Instant responses and Medium, High, or Extra High thinking depth across GPT-5.6 Luna, GPT-5.6 Sol, and flagship GPT-6 Pro/Astra models.
Asynchronous software engineering and task agents that clone repositories, run terminal tests in sandboxed environments, resolve complex bugs, and submit pull requests.
Browses dozens of primary web sources, academic papers, and connected workspace documents over several minutes to compile structured, citation-backed analytical reports.
Provides a split-screen editor for inline prose and code revisions alongside low-latency voice conversations with live screen and camera grounding.
One-click grammar, clarity, tone, and translation wherever you type on the web
Automatically spot and correct typos and grammar slips in any text field and fix them with a single click before you send.
Strip out verbose corporate phrasing and unnecessary words to turn rambling drafts into clear, direct messages.
Turn a rough outline into richer, more descriptive prose with quick suggestions on how to phrase your point better.
Translate text in place, so you can read foreign-language comments or reply to customers in their own language.
Provides massive context windows and deep Google Workspace integration, but trails behind in advanced coding workflows.
Provides massive context windows and deep Google Workspace integration, but trails behind in advanced coding workflows.
Offers superior long-form writing and coding assistance with interactive artifacts, but lacks built-in deep web search.
Offers superior long-form writing and coding assistance with interactive artifacts, but lacks built-in deep web search.
Free / Open-sourceDelivers exceptional open-weight reasoning and math performance at lower cost, but features a simpler consumer interface.
Free / Open-sourceDelivers exceptional open-weight reasoning and math performance at lower cost, but features a simpler consumer interface.
Integrates real-time social media data and image generation directly into chat, but has fewer enterprise integrations.
Integrates real-time social media data and image generation directly into chat, but has fewer enterprise integrations.
SpecialistThe AI workspace where teams and agents get work done together
SpecialistExcels at real-time web research with verifiable inline citations, but offers less robust general conversational coding features.
SpecialistExcels at real-time web research with verifiable inline citations, but offers less robust general conversational coding features.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Provides a completely free conversational assistant across social apps, but lacks advanced coding agents and deep research.
Provides a completely free conversational assistant across social apps, but lacks advanced coding agents and deep research.
Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace
SpecialistThe AI coding agent for building ambitious software
SpecialistThe AI coding agent for building ambitious software
SpecialistSpecializes in processing exceptionally long documents for deep research, but lacks multi-modal voice and advanced code execution.
SpecialistSpecializes in processing exceptionally long documents for deep research, but lacks multi-modal voice and advanced code execution.
AI grammar, spelling and style checker for 30+ languages
AI grammar, spelling and style checker for 30+ languages
