LMArena vs Pangram Labs
Which Evaluation AI tool is better in 2026?
LMArena
Crowdsourced leaderboard for ranking AI models
Pangram Labs
Machine learning classifiers that detect AI-generated text and images
Side-by-side
LMArena is the more established option (raised $250M), but Pangram Labs is cheaper to start.
| Metric | LMArena | Pangram Labs |
|---|---|---|
| Taglinei | Crowdsourced leaderboard for ranking AI models | Machine learning classifiers that detect AI-generated text and images |
| Foundedi | 2025 | 2023🏆 |
| HQi | Berkeley, United States | Brooklyn, United States |
| Employeesi | — | 11-50🏆 |
| Neuron scorei | 73🏆 | 67 |
| Total fundingi | $250M🏆 | $12.9M |
| Latest roundi | Series A · Jan 2026 | Venture · Jul 2026 |
| Valuationi | $1.7B🏆 | — |
| Cheapest paid plani | Pricing not disclosed | From $20/mo🏆 |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free · From $20/mo |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for LMArena and Pangram Labs.
| Capability | LMArena | Pangram Labs |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of LMArena
- Has raised more capital ($250M vs $12.9M)
- Higher Neuron score (73 vs 67)
- Offers a free trial
- Newer company (2025)
🔵 Strengths of Pangram Labs
- Lower starting price ($20/mo)
- More mature (2023)
Which should you choose?
Choose Pangram Labs if price matters most — it starts at Free · From $20/mo, which is friendlier for teams watching burn. Both AI Evaluation tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose LMArena if you want the most established option — it has raised $250M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
LMArena vs Pangram Labs — which is better?
It depends on your priority. LMArena has raised more capital and is the more established option; Pangram Labs is cheaper to start. See the side-by-side table above.
Is LMArena cheaper than Pangram Labs?
No — Pangram Labs's cheapest paid plan is Free · From $20/mo, while LMArena's is Free.
Do LMArena and Pangram Labs offer free plans?
LMArena: Yes, has a free plan. Pangram Labs: Yes, has a free plan.
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