Quick Verdict
The LLM visibility space is heating up fast, and both Promptwatch and Radix want to help you track how often AI models mention your brand. Promptwatch launched with serious backing — $1.4M from Arches Capital — and already tracks 3,000+ websites across all major AI platforms. Radix takes a simpler approach, focusing on prompt testing and competitor comparisons.
Here's where it gets interesting: one has transparent pricing and proven scale, the other keeps their cards close to their chest. The choice comes down to whether you want comprehensive tracking with known costs or prefer a more focused toolset where you'll need to ask for pricing.
Score comparison
Score Comparison
| Dimension | Promptwatch | Radix |
|---|---|---|
| Feature Depth | 44.0 | 29.0 |
| Ease of Use | 50.0 | 50.0 |
| Data Quality | 72.0 | 42.0 |
| Value for Money | 79.0 | 55.0 |
| Integration | 30.0 | 0.0 |
| Market Traction | 8.0 | 6.0 |
Feature comparison
| Feature | Promptwatch | Radix |
|---|---|---|
| Multi-Platform Monitoring | ✓ | — |
| Source Attribution Analysis | ✓ | — |
| Crawler Log Intelligence | ✓ | — |
| Competitive Benchmarking | ✓ | — |
| Query Performance Tracking | ✓ | — |
| Citation Quality Scoring | ✓ | — |
| Prompt Testing | — | ✓ |
| Citation Tracking | — | ✓ |
| Competitor Benchmarking | — | ✓ |
| AI Visitor Analytics | — | ✓ |
Pricing comparison
| Plan | Promptwatch | Radix |
|---|---|---|
| Free | $0 | Contact for pricing |
| Essential | $89/mo | — |
| Professional | $199/mo | — |
| Business | $499/mo | — |
Feature Comparison
Promptwatch casts the widest net, monitoring your brand mentions across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. Their crawler log analysis feature digs into source attribution from YouTube and Reddit — something most competitors skip entirely. You get real visibility into why AI models cite specific sources for your industry queries. Radix focuses on active testing rather than passive monitoring. They run prompts against AI models and count how often your brand appears in recommendations. Their competitor benchmarking shows you exactly how you stack up against rivals in AI responses. But their platform coverage appears narrower, and they don't offer the source attribution depth that Promptwatch provides. The analytics integration angle sets Radix apart somewhat. They connect AI visitor data to your existing analytics setup, which sounds useful but remains vague without more technical details. Promptwatch doesn't emphasize this connection but provides clearer tracking of which content drives AI citations.
Pricing Comparison
Promptwatch lays out their pricing clearly: Essential at $89/month, Professional at $199/month, and Business at $499/month. They also offer a free tier to test the waters. For an early-stage company tracking AI visibility, that $89 entry point makes experimentation feasible. Radix keeps their pricing completely private. No free tier, no published rates, no indication of what different tiers include. This forces potential customers into sales conversations before understanding basic costs. For budget-conscious marketers or agencies testing AI visibility tracking, this opacity creates unnecessary friction.
Best For
Promptwatch works better if you need comprehensive monitoring across all major AI platforms and want to understand the source attribution behind AI recommendations. The transparent pricing and free tier make it accessible for testing, while their 3,000+ website customer base suggests proven reliability at scale. Radix fits teams that prefer active prompt testing over passive monitoring and need tight integration with existing analytics tools. If you're already working with a specific analytics stack and want AI visibility data flowing into familiar dashboards, their approach might align better with your workflow.
The Verdict
Promptwatch wins this comparison on transparency, feature breadth, and proven market traction. The $89 starting price gives you a clear entry point, while their comprehensive platform monitoring and source attribution features provide actionable insights. Radix's hidden pricing model and narrower feature set make it harder to recommend unless their specific analytics integration perfectly matches your existing setup. Start with Promptwatch's free tier and test their platform monitoring capabilities against your key brand queries. The pricing transparency alone makes evaluation much simpler.
Our verdict
For features, promptwatch leads. On a budget, go with promptwatch.