LMArena vs Nebius
Which Foundation Models AI tool is better in 2026?
LMArena
Crowdsourced leaderboard for ranking AI models
Nebius
Full-stack AI cloud with large-scale GPU clusters for training and inference
Side-by-side
Nebius is the more established option (raised $700M); pricing is comparable on both sides.
| Metric | LMArena | Nebius |
|---|---|---|
| Taglinei | Crowdsourced leaderboard for ranking AI models | Full-stack AI cloud with large-scale GPU clusters for training and inference |
| Foundedi | 2025 | 2024🏆 |
| HQi | Berkeley, United States | Amsterdam, Netherlands |
| Employeesi | — | 1000🏆 |
| Neuron scorei | 73 | 77🏆 |
| Total fundingi | $250M | $700M🏆 |
| Latest roundi | Series A · Jan 2026 | private_placement · Dec 2024 |
| Valuationi | $1.7B🏆 | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for LMArena and Nebius.
| Capability | LMArena | Nebius |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 4 (Python, REST API, CLI, Terraform) |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of LMArena
- Offers a free plan
- Newer company (2025)
🔵 Strengths of Nebius
- Has raised more capital ($700M vs $250M)
- Higher Neuron score (77 vs 73)
- More mature (2024)
Which should you choose?
Choose Nebius if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both Foundation Models tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Nebius if you want the most established option — it has raised $700M, 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 Nebius — which is better?
It depends on your priority. LMArena is the leaner option; Nebius has broader feature depth. See the side-by-side table above.
Is LMArena cheaper than Nebius?
No — Nebius's cheapest paid plan is Free trial, while LMArena's is Free.
Do LMArena and Nebius offer free plans?
LMArena: Yes, has a free plan. Nebius: Free trial only.
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