EleutherAI vs Trillion Labs
Which Foundation Models AI tool is better in 2026?
EleutherAI
Non-profit open-source AI research lab behind GPT-J, GPT-NeoX, Pythia and The Pile
Trillion Labs
Seoul lab building open Korean foundation models and AI-for-AI-factories infrastructure
Side-by-side
Trillion Labs is the more established option (raised $4.2M); pricing is comparable on both sides.
| Metric | EleutherAI | Trillion Labs |
|---|---|---|
| Taglinei | Non-profit open-source AI research lab behind GPT-J, GPT-NeoX, Pythia and The Pile | Seoul lab building open Korean foundation models and AI-for-AI-factories infrastructure |
| Foundedi | 2020🏆 | 2024 |
| HQi | United States | Seoul, South Korea |
| Employeesi | — | — |
| Neuron scorei | 64 | 67🏆 |
| Total fundingi | Undisclosed | $4.2M🏆 |
| Latest roundi | — | Seed · Aug 2024 |
| Valuationi | — | — |
| 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 |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for EleutherAI and Trillion Labs.
| Capability | EleutherAI | Trillion Labs |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 1 (Python) | — |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of EleutherAI
- More mature (2020)
🔵 Strengths of Trillion Labs
- Has raised more capital ($4.2M vs Undisclosed)
- Higher Neuron score (67 vs 64)
- Newer company (2024)
Which should you choose?
Choose Trillion Labs if price matters most — it starts at Free, 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 Trillion Labs if you want the most established option — it has raised $4.2M, 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
EleutherAI vs Trillion Labs — which is better?
It depends on your priority. EleutherAI is the leaner option; Trillion Labs has broader feature depth. See the side-by-side table above.
Is EleutherAI cheaper than Trillion Labs?
No — Trillion Labs's cheapest paid plan is Free, while EleutherAI's is Free.
Do EleutherAI and Trillion Labs offer free plans?
EleutherAI: Yes, has a free plan. Trillion Labs: Yes, has a free plan.
Explore more Foundation Models tools
Contextual paths to related AI startups, deals and rankings.