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Overall Winner: Relativity·75/ 100

Luminance vs Relativity

Side-by-side on valuation, funding, investors, founders & more

Comparison updated: April 2026

Relativity is valued at $3.6B — more than 3x Luminance's N/A.

Head-to-Head Verdict

Relativity leads on 3 of 3 metrics

Luminance

0 wins

-Awaira Score
-Team Size
-Experience

Relativity

3 wins

+Awaira Score
+Team Size
+Experience
Luminance logo
Luminance

🇬🇧 United Kingdom · Eleanor Sheridan-Sherlock

Series CAI LegalEst. 2015

Valuation

N/A

Total Funding

$165M

Awaira Score64/100

150 employees

Full Luminance Profile →
Winner
Relativity logo
Relativity

🇺🇸 United States · Andrew Sieja

PrivateAI LegalEst. 2001

Valuation

$3.6B

Total Funding

N/A

Awaira Score75/100

1750 employees

Full Relativity Profile →
Market Context

Both companies compete in the AI Legal space, though from different geographies — Luminance in United Kingdom and Relativity in United States. Different stages (Series C vs Private) mean these companies face fundamentally different operational priorities.

🔬

Analyst Summary

Built from real data · Updated April 2026

Within AI Legal, Luminance and Relativity rank among the most closely watched rivals. Luminance is a UK-based AI legal technology company founded in 2015 that specializes in document intelligence and legal AI solutions. Relativity is a cloud-based legal technology platform founded in 2001 that provides software solutions for legal discovery, case management, and document review.

Only Relativity has a public valuation on record ($3.6B); Luminance's has not been disclosed. Luminance has raised $165M in disclosed funding.

Luminance is the younger company by 14 years, having launched in 2015 compared to Relativity's 2001 founding. Stage-wise, Luminance is classified as Series C and Relativity as Private, reflecting divergent fundraising histories. Team sizes also differ: Luminance employs 150 people versus Relativity's 1750.

Based in 🇬🇧 United Kingdom and 🇺🇸 United States respectively, Luminance and Relativity tap into different talent markets and regulatory environments. The Awaira Score gives Relativity (75) a notable lead over Luminance (64). Under Eleanor Sheridan-Sherlock and Andrew Sieja respectively, both companies continue to chart aggressive growth paths.

Key Numbers

Valuation
N/A
$3.6B
Total Funding
$165M
N/A
Awaira Score
64/100
75/100
Employees
150
1750
Founded
2015
2001
Stage
Series C
Private
LuminanceRelativity

Funding Velocity

Luminance

Total Rounds3
Avg. Round Size$55M
Funding Span4.7 yrs

Relativity

Total Rounds1
Avg. Round Size$50M

Funding History

Luminance has completed 3 funding rounds, while Relativity has gone through 1. Luminance's most recent round was a Series C of $123M, compared to Relativity's Series A ($50M). Luminance is at Series C while Relativity is at Private — different points in their growth trajectory.

Team & Scale

Relativity has the bigger team at roughly 1750 people — 12x the size of Luminance's 150. Relativity has a 14-year head start, founded in 2001 vs Luminance's 2015. Geographically, they're in different markets — Luminance operates out of United Kingdom and Relativity from United States.

Metrics Comparison

MetricLuminanceRelativity
💰Valuation
N/A
$3.6B
📈Total Funding
$165M
N/A
📅Founded
2015WINS
2001
🚀Stage
Series C
Private
👥Employees
150
1750
🌍Country
United Kingdom
United States
🏷️Category
AI Legal
AI Legal
Awaira Score
64
75WINS

Key Differences

📅

Market experience: Relativity has 14 years more (founded 2001 vs 2015)

🚀

Growth stage: Luminance is at Series C vs Relativity at Private

👥

Team size: Luminance has 150 employees vs Relativity's 1750

🌍

Market base: 🇬🇧 Luminance (United Kingdom) vs 🇺🇸 Relativity (United States)

⚔️

Direct competitors: Both operate in the AI Legal market segment

Awaira Score: Relativity scores 75/100 vs Luminance's 64/100

Which Should You Choose?

Use these signals to make the right call

Luminance logo

Choose Luminance if…

  • Stronger investor backing — raised $165M
  • United Kingdom-based for regional compliance or proximity
  • Luminance is a UK-based AI legal technology company founded in 2015 that specializes in document intelligence and legal AI solutions
Relativity logo

Choose Relativity if…

Top Pick
  • Higher Awaira Score — 75/100 vs 64/100
  • More established by valuation ($3.6B)
  • More market experience — founded in 2001
  • United States-based for regional compliance or proximity
  • Relativity is a cloud-based legal technology platform founded in 2001 that provides software solutions for legal discovery, case management, and document review

Funding History

Luminance raised $165M across 3 rounds. Relativity raised N/A across 1 round.

Luminance

Series C

Oct 2021

Lead: Salesforce Ventures

$123M

Series B

Jan 2019

Lead: Autonomy Capital

$32M

Series A

Jan 2017

$10M

Relativity

Series A

Jan 2008

Lead: Thoma Bravo

$50M

Investor Comparison

No shared investors detected between these two companies.

Unique to Luminance

Salesforce VenturesMagdala CapitalAutonomy CapitalInvoke CapitalFuel Ventures

Unique to Relativity

Thoma Bravo

Users Also Compare

FAQ — Luminance vs Relativity

Is Luminance bigger than Relativity?
Relativity has a disclosed valuation of $3.6B, while Luminance's valuation is not publicly available, making a direct size comparison difficult. Relativity employs 1750 people.
Which company raised more funding — Luminance or Relativity?
Luminance has raised $165M in disclosed funding across 3 known rounds. Relativity's funding history is not publicly available.
Which company has a higher Awaira Score?
Relativity leads with an Awaira Score of 75/100, while Luminance sits at 64/100. That 11-point gap reflects real differences in funding, scale, and traction — it's not a vanity metric.
Who founded Luminance vs Relativity?
Luminance was founded by Eleanor Sheridan-Sherlock in 2015. Relativity was founded by Andrew Sieja in 2001. Visit each company's profile on Awaira for a full founder biography.
What does Luminance do vs Relativity?
Luminance: Luminance is a UK-based AI legal technology company founded in 2015 that specializes in document intelligence and legal AI solutions. The company develops machine learning platforms designed to assist legal professionals with contract analysis, due diligence, and document review processes. Luminance's core technology uses artificial intelligence to extract insights from legal documents, identify risks, and accelerate document-intensive workflows across law firms, corporate legal departments, and professional services organizations. The platform processes unstructured legal text to provide contract abstraction, clause identification, and anomaly detection capabilities. Luminance serves clients across multiple sectors including financial services, corporate transactions, and regulatory compliance. The company has secured $165M in total funding through Series C stage investment, with valuation not disclosed. Its positioning addresses the legal AI market where document review and contract intelligence represent significant operational bottlenecks and cost centers. Luminance competes within a growing segment of legal tech vendors offering AI-powered document analysis alongside established players in contract lifecycle management and legal research. The company has maintained growth trajectory through enterprise adoption and expanded product capabilities. Its technology approach focuses on practical implementation of machine learning to enhance legal workflows rather than full case outcome prediction. The Series C funding indicates investor confidence in the commercial viability and market demand for intelligent legal document solutions. Luminance combines document intelligence with legal-specific AI to address contract and due diligence workflows at enterprise scale. Relativity: Relativity is a cloud-based legal technology platform founded in 2001 that provides software solutions for legal discovery, case management, and document review. The company's core product, Relativity One, is a SaaS platform that enables law firms, corporations, and government agencies to manage large-scale document collections during litigation and investigations. The platform uses artificial intelligence and machine learning to automate document review, predict document relevance, and identify patterns across unstructured data. Relativity's RelativityAssist AI suite incorporates generative AI capabilities for legal workflows, including document summarization and contract analysis. The company serves major law firms, Fortune 500 companies, and government organizations globally. With a valuation of $3.6 billion as a private company, Relativity has established significant market presence in the legal tech sector. The platform processes billions of documents annually and handles complex eDiscovery workflows. Relativity competes against platforms like Everlaw, LexisNexis, and Thomson Reuters' legal solutions. The company has expanded beyond traditional eDiscovery into contract lifecycle management and legal operations. Growth has been driven by increasing demand for AI-assisted legal work and digital transformation in law departments. Relativity's ecosystem includes integrations with third-party applications and a developer community supporting customization and extension of platform capabilities. Relativity dominates the legal tech AI space by processing billions of documents annually through its cloud-native platform, making it essential infrastructure for large-scale legal operations.
Which company was founded first?
Relativity got there first, launching in 2001 — that's 14 years of extra runway. Luminance didn't arrive until 2015. In AI, that kind of head start means more training data, deeper customer relationships, and a bigger talent moat.
Which company has more employees?
Luminance has about 150 employees; Relativity has about 1750. A bigger team usually means more revenue or heavier VC backing, but in AI, small teams can build at massive scale.
Are Luminance and Relativity competitors?
Yes — they're direct rivals. Both Luminance and Relativity compete in AI Legal, targeting many of the same buyers. If you're evaluating one, you should be looking at the other.

Bottom Line

Relativity edges ahead with an Awaira Score of 75, but Luminance (64) isn't far behind. The gap is narrow enough that it could shift with the next funding round.

Who Should You Watch?

Relativity has a slight edge on paper, but Luminance isn't far behind. The AI space moves fast — today's underdog can be tomorrow's category leader. Follow both profiles on Awaira to track funding rounds, team changes, and score updates.

Deep Dive