Flexprice vs Sequence Billing

Flexprice provides usage metering, pricing logic, and invoice generation for AI and SaaS teams. Usage events can arrive through a REST API, SDKs, or direct Kafka integration, with deduplication, idempotency keys, and exactly-once aggregation across time windows. Its pricing engine supports flat, per-seat, graduated, tiered, volume-based, credit-pack, and minimum-commitment models configured in the UI. Invoice generation covers proration, mid-cycle plan changes, multiple currencies, tax line items, PDF delivery, payment collection through Stripe or Braintree, and dunning. Listed integrations include Stripe, Salesforce, HubSpot, Segment, AWS, GCP, Kafka, Snowflake, dbt, Postgres, Slack, and Zapier. The free Developer plan includes up to 100,000 events per month, one pricing plan, and 14-day data retention. Growth costs $299 a month and allows up to 5,000,000 events per month; additional events cost $0.06 per 10K. Flexprice is available via API and web.

Sequence Billing has no write-up on Specifiction yet; its figures are above.