Braintrust Data vs LM Arena
Braintrust Data vs LM Arena, compared side by side on 14 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Braintrust Data is on 72/100 and LM Arena on 52/100.
Where each one leads
Braintrust Data
- our overall score: 72/100 against 52/100
LM Arena
- funding raised: $250M against $80.0M
At a glance
| Measure | Braintrust Data | LM Arena |
|---|---|---|
| What it is | The observability layer for AI. | The public leaderboard for frontier LLMs. |
| Category | Artificial Intelligence, Software, Data Management, Observability | Artificial Intelligence, Machine Learning, Software |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | Not published | 2023 |
| Headquarters | United States | Berkeley, USA |
| Status | Active | Inactive |
Size, funding and growth
| Measure | Braintrust Data | LM Arena |
|---|---|---|
| Total funding | $80.0M | $250M |
| Latest round | Series B | Series A |
| Valuation | $800M | $1.7B |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Braintrust Data | LM Arena |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 72/100 | 52/100 |
| Traction | 40/100 | 40/100 |
| Team | 30/100 | 70/100 |
| Community | 15/100 | 15/100 |
| Search visibility | 11/100 | 16/100 |
| Quality | Not published | 65/100 |
| Agent readinessHow well an AI agent can read and act on the site | Not published | F (22/100) |
Braintrust Data vs LM Arena: common questions
Which is better, Braintrust Data or LM Arena?
On our 0-100 score Braintrust Data rates higher (72/100 against 52/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 14 data points above: read the rows that match what you are buying for.
How do Braintrust Data and LM Arena compare on the numbers?
Braintrust Data leads on our overall score (72/100 against 52/100). LM Arena leads on funding raised ($250M against $80.0M).
Read the full Braintrust Data review and pricing or the LM Arena review and pricing. You can also browse other Braintrust Data alternatives we track.