GC AI vs Luminance
Which Legal AI tool is better in 2026?
GC AI
Luminance
Legal-Grade AI agents that automate contract drafting, negotiation and review.
Side-by-side
Luminance is the more established option (raised $165M); pricing is comparable on both sides.
| Metric | GC AI | Luminance |
|---|---|---|
| Taglinei | — | Legal-Grade AI agents that automate contract drafting, negotiation and review. |
| Foundedi | 2023 | 2015🏆 |
| HQi | — | Cambridge, GB |
| Employeesi | 11-50 | 201-500🏆 |
| Neuron scorei | 74🏆 | 73 |
| Total fundingi | $73M | $165M🏆 |
| Latest roundi | Series B | Series C · Feb 2025 |
| 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 | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for GC AI and Luminance.
| Capability | GC AI | Luminance |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of GC AI
- Higher Neuron score (74 vs 73)
- Offers a free plan
- Offers a free trial
- Newer company (2023)
🔵 Strengths of Luminance
- Has raised more capital ($165M vs $73M)
- More mature (2015)
Which should you choose?
Choose Luminance if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Legal tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Luminance if you want the most established option — it has raised $165M, 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
GC AI vs Luminance — which is better?
It depends on your priority. GC AI is the leaner option; Luminance has broader feature depth. See the side-by-side table above.
Is GC AI cheaper than Luminance?
No — Luminance's cheapest paid plan is Enterprise · Contact sales, while GC AI's is Free.
Do GC AI and Luminance offer free plans?
GC AI: Yes, has a free plan. Luminance: Paid only.
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