OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Search AI tools, categories, and leaderboards
Defapi records 6,589 monthly visits with +170.6% month-over-month growth and Paid pricing. Use AI records 8,751,848 monthly visits with -10.2% growth and Free Trial, Paid pricing.
Enterprise-grade AI model orchestration through one unified API
Multi-Model AI Chat Assistant providing unified access to 25+ LLMs like GPT-5 and Claude
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | defapi.org | use.ai |
| Pricing Model | Paid | Free Trial, Paid |
| Monthly Visits | 6.59K (6,589) | 8.75M (8,751,848) |
| MoM Traffic Delta | +4.15K (+170.6%) | -999.07K (-10.2%) |
| Primary Market & Share | 🇧🇷 Brazil (56%) | 🇺🇸 United States (19.9%) |
| Direct Visits / mo | 2.55K | 720.34K |
| User Rating | 5 | 5 |
| Supported Platforms | Website | Website |
Enterprise-grade AI model orchestration through one unified API

Multi-Model AI Chat Assistant providing unified access to 25+ LLMs like GPT-5 and Claude
Purpose-built AI engine for ai assistant tasks, delivering fast, accurate, and production-ready results.
Purpose-built AI engine for ai chatbot tasks, delivering fast, accurate, and production-ready results.
Purpose-built AI engine for large language models (llms) tasks, delivering fast, accurate, and production-ready results.
Integrated support for ai chat assistant within the Use AI workspace to streamline complex workflows.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Google's multimodal AI assistant powered by Gemini 4 Carbon (Gemini Carbon 4), Gemini 4 Argon, and Gemini 3.8 Flash with a 1M-token context window and Workspace integration.
Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
xAI's real-time AI assistant and coding workspace powered by Grok 4.7 with live X integration.
Google's rapid prototyping IDE and developer API workbench for building multimodal applications with Gemini models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
AI-powered web hosting platform combining prompt-based website building with one-click managed OpenClaw agent deployments.
Meta AI offers an AI assistant for tasks, image generation, and answering questions using Llama 4
No-code multichannel AI agents that turn static forms into interactive voice, chat, and support workflows.