onyx.app vs vellum.ai
Market traction comparison · Updated Jul 2026
| onyx.app | vellum.ai | Leads | |
|---|---|---|---|
| Monthly Visits | 370.8K | 487.6K | vellum.ai |
| Bounce Rate | 47.3% | 51.3% | onyx.app |
| SEO & Keywords | 30 | 35 | vellum.ai |
| Domain Age | 8y 4m | 3y 7m | onyx.app |
onyx.app leads in 2 of 4 dimensions, while vellum.ai leads in 2.
Growth Momentum
| onyx.app | vellum.ai | Leads | |
|---|---|---|---|
| Monthly Visits | 370.8K | 487.6K | vellum.ai |
| MoM Change | -13% | +5% | vellum.ai |
| Avg. Session | 0m42s | 0m49s | vellum.ai |
| Pages / Visit | 2.1 | 2.1 | vellum.ai |
Growth Momentum · Insight
onyx.app is losing traffic (-13%) despite 370.8K monthly visits. vellum.ai's +5% growth puts it on a trajectory to overtake.
Acquisition Strategy
| onyx.app | vellum.ai | Leads | |
|---|---|---|---|
| Primary Channel | Search 61% | Search 70% | |
| Bounce Rate | 47.3% | 51.3% | onyx.app |
| SEO & Keywords | 30 | 35 | vellum.ai |
Keyword Overlap Rate: 242%
| Keyword | Volume | onyx.app | vellum.ai |
|---|---|---|---|
| llm leaderboard | 54.0K | #5 | #4 |
| ai leaderboard | 19.7K | #6 | #3 |
| llm benchmarks | 17.1K | #4 | #2 |
| llm ranking | 13.9K | #2 | #7 |
| llm benchmark | 7.6K | #5 | #2 |
| best open source llm | 6.5K | #1 | #3 |
| best coding ai model | 2.8K | #3 | #5 |
| best ai models for coding | 2.7K | #4 | #6 |
| best llms for coding | 1.2K | #3 | #2 |
Acquisition Strategy · Insight
onyx.app acquires users primarily through Search (61%), while vellum.ai relies on Search (70%). This reflects fundamentally different go-to-market strategies — onyx.app's higher direct traffic suggests stronger brand recognition or product-led growth, while vellum.ai's search reliance means growth is more scalable but more vulnerable to algorithm changes.
Business Maturity
| onyx.app | vellum.ai | Leads | |
|---|---|---|---|
| Domain Age | 8y 4m | 3y 7m | onyx.app |
| Registered | May 2018 | Jan 2023 | |
| Expires | May 2026 | Jan 2027 |
Business Maturity · Insight
onyx.app has been in the market 5 years longer (8y vs 4y). onyx.app's longer track record suggests established operations, while vellum.ai's entry timing indicates the market still attracts new players.
Market Position
| onyx.app | vellum.ai | Leads | |
|---|---|---|---|
| Global Rank | #139.8K | #112.2K | vellum.ai |
| Category Rank | #2.6K | #2.0K | vellum.ai |
| PH Upvotes | 159 | 419 | vellum.ai |
onyx.app only
vellum.ai only
Market Position · Insight
Each has untapped markets the other serves: onyx.app could expand into United Kingdom, while vellum.ai could target Spain.
Key Takeaways
- •onyx.app is losing traffic (-13%) despite 370.8K monthly visits. vellum.ai's +5% growth puts it on a trajectory to overtake.
- •onyx.app acquires users primarily through Search (61%), while vellum.ai relies on Search (70%). This reflects fundamentally different go-to-market strategies — onyx.app's higher direct traffic suggests stronger brand recognition or product-led growth, while vellum.ai's search reliance means growth is more scalable but more vulnerable to algorithm changes.
- •vellum.ai has 1.3x more traffic (487.6K vs 370.8K), though both operate at comparable scale.
- •vellum.ai is growing (+5%) while onyx.app is declining (-13%).
- •They share 46 keywords (242% overlap), indicating direct search competition.
- •onyx.app has a 5-year head start in the market.
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Report based on data from July 2026