StarSling
AI-powered GitHub Actions runners that replace ubuntu-latest and automatically open pull requests to speed up your CI pipeline.
🔗 Visit StarSling
Description
If you've ever watched a CI pipeline crawl through the same slow test suite for the tenth time today, StarSling is built for that pain. It's a drop-in replacement for GitHub's default CI runners that not only runs your builds on faster hardware, but also has an AI agent that reads your workflow files and opens pull requests suggesting concrete speed-ups — caching, parallelization, smarter test splitting — the kind of tuning a senior engineer would do if they had a free afternoon.
StarSling runners use 5th-gen AMD EPYC processors in single-use, hardware-isolated microVMs per job, positioned as a swap-in replacement for ubuntu-latest requiring no workflow rewrite. Pricing is usage-based at $0.008/minute (about a third cheaper than GitHub's own $0.012/minute), with unlimited concurrency and no charge for queue time. It's YC-backed (batch R7B), already processing over a million CI jobs, with customers like Better Auth and Mastra reporting up to 6x faster runs. It only works with GitHub organizations, not personal repositories.
💬 Our review
The short version: if your team's GitHub Actions bill or wait times have become a real cost, StarSling is worth trying — it's cheaper per minute than GitHub's own runners and adds an AI agent that actively finds ways to make your pipeline faster instead of just running it on beefier hardware.
Compared to BuildJet or Depot, which mostly compete on raw runner speed and price, StarSling's differentiator is the automated optimization PRs — it's less "faster runner" and more "a CI engineer that works for you between builds." At $0.008/minute versus GitHub's $0.012, the savings alone can pay for the switch on a busy repo, though it's exclusive to GitHub organizations (no personal-repo support) and the 2,000 free minutes on the trial won't go far for a large monorepo. For teams already committed to GitHub Actions who want faster, cheaper builds without migrating to a different CI system entirely, it's a low-friction upgrade.
📊 Global score
🤖 AI-enriched data
Essai : 2000 minutes gratuites le premier mois, sans CB. Puis $0.008/minute (vs $0.012 chez GitHub). Enterprise : tarif custom avec SSO/SAML.
Pros
Remplacement direct de ubuntu-latest, aucune réécriture de workflow
Agent IA qui propose des PR d'optimisation automatiquement
33% moins cher que les runners GitHub par défaut
Concurrence illimitée, temps de file d'attente non facturé
Cons
Réservé aux organisations GitHub, pas aux dépôts personnels
Free tier limité à 2000 minutes/mois
Uniquement Linux/Ubuntu pour l'instant