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
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supermemory™
✓ verifiedFreemium
Developer API that gives AI agents persistent memory, retrieval, and connectors, usable both as infrastructure and a personal app.
174K visits/mo
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Arsturn
✓ verifiedFreemium
No-code builder for custom ChatGPT-style website chatbots trained on your data for support, lead gen and engagement.
133K visits/mo
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FluidStack
✓ verifiedPaid
Infrastructure company building large-scale GPU data centers and compute for AI, including Anthropic's compute buildout.
101K visits/mo
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Cartesia AI
✓ verifiedFreemium
Voice-AI platform offering real-time text-to-speech, speech-to-text and voice-agent models through one API.
384K visits/mo
Pricing
Free: $0/mo (~$5/mo of usage included)
Pro: $19/mo (~$20/mo of usage, unlimited storage, 2 teammates)
Max: $100/mo (~$130/mo of usage, 6x Pro headroom)
Scale: $399/mo (~$600/mo of usage, up to 10 teammates)
Free: $0/mo (50 credits)
Saver: $1.99/mo (250 credits)
Starter: $9/mo (1,500 credits)
Standard: $36/mo (6,000 credits)
Pro: $144/mo (24,000 credits)
Free trial available
No public pricing
No public pricing
Free: $0 (20K credits/mo)
Pro: $5/mo (100K credits)
Startup: $49/mo (1.25M credits)
Scale: $299/mo (8M credits)
Core features
- ✦Persistent, structured memory built as a knowledge graph
- ✦Sub-300ms hybrid retrieval (RAG) with reranking
- ✦Native filesystem mount for agent memory access
- ✦Connectors to Slack, Notion, Drive, Gmail, GitHub, S3
- ✦Automatic extraction from PDFs, images, and audio
- ✦User profile and behavior tracking across sessions
- ✦No-code chatbot creation
- ✦Train on files/URLs/Notion/Zendesk
- ✦Website embed widget
- ✦Conversation analytics
- ✦~95 language support
- ✦Custom branding
- ✦Large-scale GPU and data-center infrastructure for AI
- ✦Power acquisition and data-center design/build
- ✦Fast deployment (gigawatts in ~6 months)
- ✦Operates both hardware and software stack
- ✦Unlimited chatbots deployment
- ✦Automatic retraining on webpages
- ✦Customizable appearance and personality
- ✦One-click deployment to multiple platforms
- ✦User Management
- ✦Custom APIs
- ✦Sonic real-time text-to-speech
- ✦Ink speech-to-text
- ✦Line voice agents
- ✦Low-latency real-time output
- ✦Voice cloning
- ✦Single multilingual API
Use cases
- →Developers adding long-term memory to AI agents
- →Teams building agents that need to sync with existing tools
- →Individuals wanting one memory layer shared across multiple AI assistants
- →Website customer support
- →Lead generation
- →FAQ and audience engagement
- →Training and running large AI models at scale
- →Provisioning GPU compute for AI labs
- →Building dedicated AI data-center capacity
- →Customer service chatbots
- →Help desk chatbots
- →HR chatbots
- →Training chatbots
- →Consulting chatbots
- →White labeled chatbot for web apps
- →Building voice agents
- →Text-to-speech and transcription apps
- →Fraud-detection verification calls
- →Real-time customer support voice
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