
Provides massive context windows and deep Google Workspace integration, but trails behind in advanced coding workflows.

ChatGPT records 6,048,022,723 monthly visits with +2.2% month-over-month growth and Freemium pricing. Complexity records 6,671 monthly visits with +5.9% growth and Free pricing.
An AI knowledge engine that answers questions about the world around you
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatgpt.com | cplx.ai |
| Pricing Model | Freemium | Free |
| Monthly Visits | 6.05B (6,048,022,723) | 6.67K (6,671) |
| MoM Traffic Delta | +127.43M (+2.2%) |
| +374 (+5.9%) |
| Primary Market & Share | 🇺🇸 United States (21.7%) | 🇺🇸 United States (65%) |
|---|
| Direct Visits / mo | 4.44B | 2.7K |
|---|
| User Rating | 4.8 | 4.2 |
|---|
| 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.
An AI knowledge engine that answers questions about the world around you
Ask in plain language and receive a synthesized response instead of an unfiltered list of links.
Homepage prompts such as quantum computing, AI and job markets, or geopolitics give you an easy starting point.
A minimal layout keeps attention on your question and the answer, without dashboard noise.
Useful across science, technology, economics and current events rather than a single narrow niche.

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.
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.

SpecialistThe AI workspace where teams and agents get work done together
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Provides a completely free conversational assistant across social apps, but lacks advanced coding agents and deep research.

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.

Agentic search that composes cited research pages for you

A free, AI-powered academic search engine for 240M+ papers across every scientific field


AI academic search engine for peer-reviewed science
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.
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.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Provides a completely free conversational assistant across social apps, but lacks advanced coding agents and deep research.
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.
A free, AI-powered academic search engine for 240M+ papers across every scientific field