Blacksmith vs Bruno
Side-by-side comparison of AI visibility scores, market position, and capabilities
San Francisco GitHub Actions CI runner at $3.5M ARR with 700+ customers by Sept 2024; $13.5M total ($10M GV Series A) with 2x speed/75% cost reduction through gaming-grade CPUs founded Jan 2024 from YC W24.
About
Blacksmith is a San Francisco, California-based high-performance CI/CD infrastructure platform — backed with $13.5 million in total funding including a $10 million Series A in September 2024 led by Google Ventures (four months after a $3.5 million seed round also led by Google Ventures) — providing development teams with drop-in replacement GitHub Actions runners that deliver up to 2x faster CI pipeline execution and up to 75% compute cost reduction through purpose-built gaming-grade CPUs rather than standard AWS/Azure cloud instances. Founded in January 2024 by University of Waterloo alumni Aditya Jayaprakash (CEO), Aayush Shah, and Aditya Maru (Y Combinator Winter 2024 batch), Blacksmith reached $1 million ARR within one month of launch and $3.5 million ARR with 700+ customers by September 2024. Notable angel investors include Spencer Kimball (CEO Cockroach Labs), David Cramer (co-founder Sentry), and other developer tools founders.
Open-source offline-first API client with git-native Bru file storage; solo-founded, declined 8 VC offers, competing with Postman and Insomnia for developers seeking privacy-respecting local API testing tooling.
About
Bruno is an open-source API client and testing tool — a lightweight, offline-first, git-friendly alternative to Postman and Insomnia — enabling developers to explore, test, and document APIs with collections stored as plain-text Bru files in the project filesystem rather than in cloud-synced proprietary formats. Created by a solo founder in 2022 and growing to a 9-person team by late 2024, Bruno operates with an unusual philosophy: the founder publicly declined 8 venture capital offers to preserve product freedom and build toward profitability, with the core Bruno client remaining free and open-source (MIT license) while the Golden Edition provides enterprise features for commercial revenue. Pro and Ultimate paid editions launched in 2024.
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