# Sierra reaches $400M+ ARR as customers push AI agents into larger enterprise work

> Original title: Our customers’ ambition is accelerating our growth

- Source: Sierra Blog
- Published: 2026-10-30T12:50:00.000Z
- Bad Influence: https://badinfluence.news/items/lg0xusjd445i6dwe69f3a6l1i
- Original: https://sierra.ai/blog/our-customers-ambition-is-accelerating-our-growth

## Summary

Sierra says it has passed $400M in annual recurring revenue, adding over $150M in Q3 alone. The company says it took six months to go from $100M to $200M ARR and five months from $200M to $400M, and that it now works with almost 50% of the Fortune 50.