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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.
⇄ Comparison dimension — pick the market you're actually shopping in
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Synced.so
✓ verifiedPaid
Turns a team's Notion pages into a branded, SEO-friendly help center site or embeddable in-app widget.
2.5K visits/mo
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AI or Not
✓ verifiedFreemium
AI or Not detects AI-generated and deepfake images, video, audio and text via API with a claimed 98.9% accuracy.
240K visits/mo2.9K saves
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Runware
✓ verifiedFreemium
Pay-as-you-go API aggregating thousands of image, video, audio and LLM models with custom inference hardware for lower per-request cost.
249K 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
Starter: $39/mo (2 help centers, 100 articles)
Professional: $79/mo (10 help centers, 1000 articles)
Business: $99/mo (20 help centers, 2000 articles)
Free trial available
No public pricing
Free: $0 ($5 in credits, 1M words + 20 image checks)
Pro: $5/mo ($10 credits/mo)
vCPU compute: $0.016/hr
RTX PRO 6000: $1.99/hr (as low as $0.99)
H100: $2.76/hr
H200: $3.18/hr
B200: $4.99/hr
Free trial available
Free: $0 (20K credits/mo)
Pro: $5/mo (100K credits)
Startup: $49/mo (1.25M credits)
Scale: $299/mo (8M credits)
Core features
- ✦Auto-converts Notion pages into a help center site
- ✦Embeddable in-app widget with natural-language search
- ✦Custom domain or sub-path hosting
- ✦Automatic SEO optimization and fast page loads
- ✦Branding customization (logo, colors, header/footer)
- ✦Password-protected private help centers
- ✦Multi-language and custom text support
- ✦Feedback collection on articles
- ✦Markdown to Notion publishing
- ✦Automatic subpage creation from directory structure
- ✦CLI flag support for title and emoji
- ✦Integration with Notion's AI, search, and formatting
- ✦AI image, video, audio and text detection
- ✦Deepfake detection
- ✦Detection API with key included
- ✦Per-use credits across all modalities
- ✦Model-level breakdown of results
- ✦Enterprise/on-prem and reseller options
- ✦Single API for image, video, audio, 3D and LLM models
- ✦Standardized model addressing across hosted, partner and custom uploads
- ✦Support for LoRAs, ControlNets, VAEs and embeddings on open-source models
- ✦WebSocket and REST access with async webhook delivery
- ✦Pay-per-request billing with no infrastructure to manage
- ✦Raw serverless GPU/CPU compute for custom workloads
- ✦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
- →Startups turning internal Notion docs into public documentation
- →SaaS teams adding contextual in-app help
- →Support teams wanting SEO-optimized knowledge bases without new tooling
- →Companies needing password-protected internal wikis
- →Publishing documentation to a Notion workspace
- →Creating a public website from markdown documentation
- →Maintaining documentation alongside code in a repository
- →Verify whether media is AI-generated
- →Screen content for deepfakes
- →Integrate AI detection into workflows via API
- →Adding AI image or video generation to an app without managing infra
- →Batching multi-modal generation tasks in one API call
- →Running custom fine-tuned models via Model Upload
- →Cutting inference costs at high generation volume
- →Building voice agents
- →Text-to-speech and transcription apps
- →Fraud-detection verification calls
- →Real-time customer support voice
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