Compare tools
Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
⇄ Comparison dimension — pick the market you're actually shopping in
Lightweight MIT-licensed JavaScript chatbot UI widget for building support-agent chat interfaces on top of any LLM.
Serverless cloud browser API with persistent sessions, built-in stealth and proxies, for AI agents, automation and scraping.
Human-friendly API testing client for terminal, desktop and web, known for readable syntax; the CLI is open source.
Speech-to-text API infrastructure with multilingual real-time and batch transcription for building voice products.
Reinforcement-learning engine that auto-places and routes PCB layouts from existing CAD files, validated against physical constraints.
No public pricing
Free trial available
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
- ✦Serverless cloud Chromium browsers
- ✦Persistent logged-in sessions
- ✦Built-in stealth / anti-detect fingerprinting
- ✦Residential & datacenter proxies in 150+ countries
- ✦Playwright/Puppeteer WebSocket connection
- ✦Headful mode for live inspection
- ✦Human-friendly command-line HTTP client
- ✦Web and desktop GUI apps
- ✦Simple, readable request syntax
- ✦Request export/import and history
- ✦Path parameters and 'copy as command'
- ✦Open-source terminal version
- ✦Real-time multilingual speech-to-text (<300ms)
- ✦Batch/async transcription
- ✦Solaria speech models
- ✦Key-entity capture and enrichment
- ✦EU data residency
- ✦Free tier and playground
- ✦Imports existing projects from major ECAD tools
- ✦Generates thousands of candidate board layouts via reinforcement learning
- ✦Flags bypass capacitors, impedance nets, and differential pairs for review
- ✦Supports parallel iteration across stack-ups and manufacturers
- ✦Transparent design review against a full constraint checklist
- ✦Returns files in the same CAD format for DRC and fab-file generation
- →Adding an AI chat UI to web apps
- →Building LLM-powered support agents
- →Embedding chat widgets in existing products
- →Prototyping chatbot interfaces
- →Running AI browser agents
- →Web scraping at scale
- →Automating logged-in workflows
- →Debugging automation in live sessions
- →Testing REST APIs
- →Sending and inspecting HTTP requests
- →Debugging web services
- →Sharing API requests across a team
- →Transcribe voice-agent and contact-center calls
- →Power meeting-assistant note taking
- →Generate subtitles and media transcripts
- →Build voice products on one API
- →Speeding up IC evaluation board layout from weeks to hours
- →Cutting design validation board cycles from months to days
- →Reducing backplane and interconnect board bring-up time
- →Iterating multiple layout candidates in parallel before fabrication