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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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Lightweight MIT-licensed JavaScript chatbot UI widget for building support-agent chat interfaces on top of any LLM.
Unified API gateway to 500+ AI models (GPT, Claude, Sora, image/video) with OpenAI-compatible endpoints and discounted usage.
Google's open-source TypeScript framework for building scalable web apps, featuring signals, reactivity and first-party tooling.
Atlassian's Git repository hosting for teams with built-in CI/CD pipelines and tight Jira integration for code review and deployment.
AI-assisted, no-code website builder for designers to create, publish and host professional responsive websites.
No public pricing
No public pricing
No public pricing
No public pricing
Free trial available
No public pricing
- ✦MIT-licensed and free to use
- ✦Lightweight (~65kb) JavaScript widget
- ✦4 message display modes plus typewriter effect
- ✦Markdown support and chat history
- ✦Backend hook to integrate any LLM
- ✦Responsive, mobile-friendly, read-only mode
- ✦Single OpenAI-compatible API for 500+ models
- ✦Chat, image, video and audio models
- ✦Discounted per-request pricing
- ✦One dashboard for keys, quotas and usage
- ✦Multi-region routing and failover (99.9% uptime)
- ✦Multiple payment methods incl. crypto
- ✦Signals-based fine-grained reactivity
- ✦Built-in control flow and deferrable views
- ✦Server-side rendering and hydration
- ✦First-party routing, forms and dependency injection
- ✦AI-forward tooling and MCP resources
- ✦In-browser tutorials and playground
- ✦Git repository hosting
- ✦Bitbucket Pipelines CI/CD
- ✦Pull requests and code review
- ✦Native Jira integration
- ✦Branch permissions and access controls
- ✦IP allowlisting and security features
- ✦Visual, design-driven website builder
- ✦AI generation of layouts and content from prompts
- ✦Responsive design with breakpoints
- ✦Built-in CMS for dynamic content
- ✦Hosting, custom domains and SEO tools
- ✦Animations and interactive effects
- →Adding an AI chat UI to web apps
- →Building LLM-powered support agents
- →Embedding chat widgets in existing products
- →Prototyping chatbot interfaces
- →Accessing many AI models via one API
- →Cutting AI model API costs
- →Building multimodal AI apps
- →Consolidating AI billing and keys
- →Building scalable single-page apps
- →Enterprise web application development
- →Performance-critical front ends
- →Learning modern web development
- →Source code management
- →CI/CD automation
- →Team code review
- →DevOps for Jira-based teams
- →Building marketing and portfolio websites without code
- →Launching landing pages quickly
- →Designing responsive sites visually
- →Publishing and hosting sites in one platform
