{"slug":"hillclimb","name":"Hillclimb","website":"https://hillclimb.com","tagline":"Math environments emphasizing verifiable correctness","description":"Hillclimb builds mathematics-domain environments emphasizing correctness and verifiable rewards for frontier model training.","domains":["math"],"locations":["San Francisco"],"founders":[{"name":"Jun Park","xHandle":null},{"name":"Ibrakhim Ustelbay","xHandle":null}],"teamSize":"1-10","funding":null,"raising":null,"founded":null,"notable":null,"entityType":"Pure-play commercial","canonicalUrl":"https://envindex.com/startup/hillclimb","research":null,"sources":[],"capabilityCatalog":{"startupSlug":"hillclimb","reviewedAt":"2026-08-16","status":"cataloged","items":[{"name":"Virtual Research Lab","kind":"RL Environment","summary":"A virtual lab where AI systems can experiment and learn research workflows.","access":["Commercial"],"sourceUrl":"https://www.hillclimb.com","sourceLabel":"Official website","verificationStatus":"company-reported","lastVerified":"2026-08-16"}]},"artifacts":[],"caveat":"Legacy profile awaiting claim-level source migration"}