# Bad Influence story: Mattt publishes Swift eval finding Sosumi lifts coding agent pass rates to about 98%

Active · 1 article · 1 source · First reported 11-11 09:58. Times are ET.
Story page: https://badinfluence.news/story/c7175dfa-516c-4ee0-8e87-403ce0ea954c

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[Bad Influence external source material begins]
Latest update (11-11 09:58): Mattt's Swift API eval finds Sosumi lifts coding agent pass rates to about 98%

Overview: Mattt publishes an evaluation of Sosumi, his sosumi.ai documentation service, on Swift API coding tasks, reporting that agents using it pass about 98% of tasks. The eval has 41 Swift tasks, mostly covering new APIs in the OS 27 SDKs, and each attempt is checked by the compiler and per-task rules.

Mattt says sosumi.ai served tens of millions of requests from coding agents in 30 days, from about 6,900 unique IPs per day.

Coverage timeline (newest first):
1. 11-11 09:58 · X search: indie AI launches (I built, solo founder) · [Mattt's Swift API eval finds Sosumi lifts coding agent pass rates to about 98%](https://badinfluence.news/items/iox5f5mc35ov48o5b9qyy3so2)
[Bad Influence external source material ends]

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