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FinTech · AWS

Brex

AWS-based corporate-card/spend platform on PostgreSQL with Kafka eventing. Brex Assistant uses OpenAI/Anthropic over its own financial data and an agentic spend layer.

Foundation proximity: Direct API

Foundational models & how they consume them

PrimaryGPT-4-class· OpenAI API · Direct API

SecondaryClaude· Anthropic API · Direct API

Cloud & datastore

AWSPostgreSQLKafka

Compliance

SOC 2PCI DSS

Similar companies

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Head-to-head: Brex vs Block Brex vs Coinbase Brex vs Dave

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FAQ

Does Brex use a foundational AI model?

Brex uses GPT-4-class, Claude (Direct API).

What cloud does Brex run on?

Brex runs on AWS.

What database does Brex use?

Brex uses PostgreSQL, Kafka.

How close does Brex run to the foundational model?

Brex is Direct API — close to the metal, so cheaper tokens and more control over outputs.

Sources

Also on the map

OpenAI · GPT Anthropic · Claude

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Architecture inferred from public sources · confidence medium · verify before betting on a detail.