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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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DHTMLX Chatbot
✓ verifiedFree
Lightweight MIT-licensed JavaScript chatbot UI widget for building support-agent chat interfaces on top of any LLM.
92K visits/mo
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Gladia
✓ verifiedFreemium
Speech-to-text API infrastructure with multilingual real-time and batch transcription for building voice products.
211K visits/mo
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NopeCHA
✓ verifiedFreemium
An AI CAPTCHA-solving service via browser extension or API, supporting reCAPTCHA, hCaptcha, FunCaptcha and more for automation.
115K visits/mo
Pricing
No public pricing
No public pricing
Free trial available
Free: $0 (up to 100 solves/24h)
Starter: $4.99/mo (2,000 solves/day)
Basic: $19.99/mo (20,000 solves/day)
Professional: $49.99/mo (80,000 solves/day)
Starter: €0 / month
Pro: €15 / month
Pro +: €40 / month
Team: €80 / month
Scale: €250 / month
Core features
- ✦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
- ✦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
- ✦AI CAPTCHA recognition (reCAPTCHA, hCaptcha, FunCaptcha, GeeTest, AWS WAF)
- ✦Chrome extension and Firefox add-on
- ✦Token and recognition APIs for browserless use
- ✦SDKs for Python and Node.js
- ✦Works with Selenium, Puppeteer and Playwright
- ✦Usage/activity monitoring dashboard
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Use cases
- →Adding an AI chat UI to web apps
- →Building LLM-powered support agents
- →Embedding chat widgets in existing products
- →Prototyping chatbot interfaces
- →Transcribe voice-agent and contact-center calls
- →Power meeting-assistant note taking
- →Generate subtitles and media transcripts
- →Build voice products on one API
- →Automating CAPTCHA-gated web workflows
- →Bypassing bot checks in scraping and testing
- →Integrating CAPTCHA solving into scripts
- →Generating concise marketing introductions from lengthy content using the Text Summarization API.
- →Translating text into multiple languages using the Text Translation API.
- →Ensuring grammatically correct and polished text using the Proofreading and Grammar Check API.
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