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Coval
✓ verifiedFree trial
Testing and evaluation platform for voice and chat AI agents, running simulations, production monitoring and human QA review.
10K visits/mo
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Studio
✓ verifiedPaid
AI web design tool that turns designs into live websites.
717K visits/mo26K saves
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B12
✓ verifiedFreemium
AI website builder for professional service providers that generates sites, stores and web apps plus client-engagement tools.
475K visits/mo185K saves
Pricing
No public pricing
Starter: $100/mo (100 simulation mins)
Growth: $500/mo (1,000 simulation mins)
Enterprise: from $4,500/mo
Free trial available
No public pricing
No public pricing
No public pricing
Core features
- ✦Fast tensor operations
- ✦Differentiable tensors for gradient-based optimization
- ✦Network connectivity
- ✦Integration with Bun and Flashlight
- ✦Support for GPU computation with CUDA (Linux) and CPU computation (macOS)
- ✦Voice agent simulation at scale
- ✦Production call monitoring and evals
- ✦Human QA review queues
- ✦Regression testing across changes
- ✦Vendor bake-off comparisons
- ✦API, CLI and MCP interfaces
- ✦Design canvas integrated directly into the IDE (VSCode/Cursor)
- ✦Agent-driven MCP canvas based on open design format
- ✦AI Multiplayer for generating screens and flows in parallel
- ✦Design as Code: Design files live in repo, versioned with Git
- ✦Pixel-perfect vector-to-code workflow
- ✦AI-powered design suggestions
- ✦Automated task completion
- ✦Responsive design adaptation
- ✦Instant website conversion
- ✦AI website, store and web-app generation
- ✦Built-in on-page SEO and blogging
- ✦Client intake forms and contact manager
- ✦Email marketing and automation
- ✦Contracts and eSignatures
- ✦AI content and website chatbots
Use cases
- →Creating and manipulating datasets
- →Training small machine learning models
- →Implementing advanced training and inference logic
- →Building applications that require tensor computations
- →Pressure-testing voice agents before launch
- →Catching quality drift in production
- →Comparing voice AI vendors objectively
- →Designing new products and features with pixel-perfect precision without leaving the development environment.
- →Eliminating design handoffs by having design and code live under one roof.
- →Accelerating workflow by using AI multiplayer to generate UI components and flows.
- →Shipping production-ready apps with guaranteed code-design alignment.
- →Integrating existing design systems directly from the codebase.
- →Designing and launching modern, responsive websites quickly and efficiently.
- →Launching a professional-services website quickly
- →Generating an online store or web app with AI
- →Capturing and managing client leads
- →Sending contracts and collecting eSignatures
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