arena.ai vs lmsys.org
Market traction comparison · Updated Jul 2026
| arena.ai | lmsys.org | Leads | |
|---|---|---|---|
| Monthly Visits | 31.8M | 289.2K | arena.ai |
| Bounce Rate | 34.8% | 43.2% | arena.ai |
| SEO & Keywords | 30 | 30 | Tie |
| Domain Age | 8y 8m | 3y 5m | arena.ai |
arena.ai leads in 3 of 4 dimensions, while lmsys.org leads in 0.
Growth Momentum
| arena.ai | lmsys.org | Leads | |
|---|---|---|---|
| Monthly Visits | 31.8M | 289.2K | arena.ai |
| MoM Change | -1% | +6% | lmsys.org |
| Avg. Session | 8m51s | 0m23s | arena.ai |
| Pages / Visit | 6.8 | 2.0 | arena.ai |
Growth Momentum · Insight
arena.ai is losing traffic (-1%) despite 31.8M monthly visits. lmsys.org's +6% growth puts it on a trajectory to overtake.
Acquisition Strategy
| arena.ai | lmsys.org | Leads | |
|---|---|---|---|
| Primary Channel | Direct 70% | Search 49% | |
| Bounce Rate | 34.8% | 43.2% | arena.ai |
| SEO & Keywords | 30 | 30 | — |
Keyword Overlap Rate: 0%
| Keyword | Volume | arena.ai | lmsys.org |
|---|---|---|---|
| llm arena | 142.2K | #1 | #8 |
| chatbot arena | 19.9K | #2 | #5 |
| lmsys chatbot arena | 11.2K | #2 | #1 |
Acquisition Strategy · Insight
arena.ai acquires users primarily through Direct (70%), while lmsys.org relies on Search (49%). This reflects fundamentally different go-to-market strategies — arena.ai's higher direct traffic suggests stronger brand recognition or product-led growth, while lmsys.org's search reliance means growth is more scalable but more vulnerable to algorithm changes.
Business Maturity
| arena.ai | lmsys.org | Leads | |
|---|---|---|---|
| Domain Age | 8y 8m | 3y 5m | arena.ai |
| Registered | Dec 2017 | Mar 2023 | |
| Expires | May 2028 | Mar 2035 |
Business Maturity · Insight
arena.ai has a 5-year head start, but lmsys.org's trajectory shows strong growth momentum.
Market Position
| arena.ai | lmsys.org | Leads | |
|---|---|---|---|
| Global Rank | #1.4K | #173.7K | arena.ai |
| Category Rank | #25 | — | |
| PH Upvotes | 284 | — |
arena.ai only
lmsys.org only
Market Position · Insight
Each has untapped markets the other serves: arena.ai could expand into China, Germany, Canada, while lmsys.org could target Russia, Brazil, Pakistan.
Key Takeaways
- •arena.ai is losing traffic (-1%) despite 31.8M monthly visits. lmsys.org's +6% growth puts it on a trajectory to overtake.
- •arena.ai acquires users primarily through Direct (70%), while lmsys.org relies on Search (49%). This reflects fundamentally different go-to-market strategies — arena.ai's higher direct traffic suggests stronger brand recognition or product-led growth, while lmsys.org's search reliance means growth is more scalable but more vulnerable to algorithm changes.
- •arena.ai receives 109.9x more monthly traffic than lmsys.org (31.8M vs 289.2K).
- •lmsys.org is growing (+6%) while arena.ai is declining (-1%).
- •arena.ai keeps visitors significantly longer (8m51s avg session vs lmsys.org's 0m23s), suggesting deeper product engagement or stickier content.
- •arena.ai has a 8 percentage point lower bounce rate (35% vs 43%), indicating better landing page relevance or more targeted traffic.
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Report based on data from July 2026