◆ Gentoo Logic · Modeling Warehouse

Architecture comparison

Brex vs Stripe

Stripe runs closer to the foundational model (Native (own / self-hosted weights)) than Brex (Direct API). No shared foundational model — different bets.

Brex

FinTech

Proximity
Direct API
Models
OpenAI · GPTAnthropic · Claude
Cloud · datastore
AWSPostgreSQLKafka
Compliance
SOC 2PCI DSS
Architecture

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.

Stripe

FinTech

Proximity
Native (own / self-hosted weights)
Models
proprietary / self-built models
Cloud · datastore
AWSMongoDBcustom sharded DB (DocDB)
Compliance
SOC 2PCI DSS Level 1HIPAA
Architecture

AWS-based payments platform built on a large MongoDB deployment fronted by an in-house sharding/transaction layer (DocDB). Radar fraud detection is in-house ML; a payments foundation model was trained on transaction data.

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