AI agents in Software Engineering

10 real deployments, each with sources, reported outcomes, and caveats.

Software EngineeringStripe

More than a thousand pull requests merged each week are fully agent-produced and human-reviewed.

Software EngineeringSpotify

1,500+ merged AI-generated PRs; 1,000 merged PRs took three months at first and about ten days later on.

Software EngineeringAider (open source)

Aider's release notes report that Aider wrote up to 88% of the code in a release (v0.86.0, August 2025).

Company reportedAider

Software EngineeringGoldman Sachs

Pilot started with plans for hundreds of instances; the CIO expects 3–4x developer output on routine code updates.

Press reportDevin

Software EngineeringCloudflare

A working OAuth 2.1 provider library for Cloudflare Workers, written mostly by Claude and reviewed by Cloudflare engineers.

IndependentClaude

Software EngineeringAirbnb

~3,500 test files migrated in 6 weeks; about 97% fully automated and the rest finished by hand.

Software EngineeringGoogle

Across 39 migrations, about 74% of code changes were LLM-generated; developers estimated a 50% cut in total migration time.

Software EngineeringRakuten

Seven hours of mostly autonomous coding in one run. Rakuten reports 99.9% numerical accuracy versus the reference method.

Vendor case studyClaude Code

Software EngineeringAmazon

30,000 apps upgraded. Amazon estimates 4,500 developer-years saved and $260M a year from performance gains.

Software EngineeringNubank

Cognition reports 8–12x engineering-time efficiency and over 20x cost savings on the data-class migrations.

Vendor case studyDevin