---
title: Self-driving CI | StarSling | 80% faster GitHub Actions
description: Fast GitHub Actions runners with AI agents that continuously improve your build speeds. Drop-in replacement for ubuntu-latest.
url: https://starsling.dev
---

# StarSling

> AI-native DevOps tooling for developers that ship.

**Website:** [starsling.dev](https://starsling.dev)
**Backed by:** Y Combinator

## Self-driving CI

Fast GitHub Actions runners with AI agents that continuously improve your build speeds.

- [Join the Waitlist](https://tally.so/r/b5OJVo)

---

## Trusted by fast-moving teams

Powering CI for startups and fast-moving engineering teams.

- [Better Auth — Seed — YC X25](https://www.better-auth.com)
- [Mastra — Seed — YC W25](https://mastra.ai)
- [OrgOrg — Seed — YC S24](https://orgorg.com)

---

## Results from early adopters

- **+82%** Faster CI
- **500,000+** GitHub Actions jobs

Sources:

- Better Auth: [Before](https://github.com/better-auth/better-auth/actions/metrics/performance?dateRangeType=DATE_RANGE_TYPE_CUSTOM&range=1770336000000-1770681600000) · [After](https://github.com/better-auth/better-auth/actions/metrics/performance?dateRangeType=DATE_RANGE_TYPE_CUSTOM&tab=jobs&filters=runner_type%3Aself-hosted&range=1773964800000-1774310400000)
- Mastra: [Before](https://github.com/mastra-ai/mastra/actions/metrics/performance?dateRangeType=DATE_RANGE_TYPE_CUSTOM&range=1771200000000-1771977600000) · [After](https://github.com/mastra-ai/mastra/actions/metrics/performance?dateRangeType=DATE_RANGE_TYPE_CUSTOM&tab=jobs&filters=runner_type%3Aself-hosted&range=1773187200000-1774310400000)

---

## The Problem

**CI is the new bottleneck**

AI made coding 10x faster. CI hasn't kept up, until now.

### One click to install. Zero config.

Install the StarSling GitHub App and our bot opens a PR to migrate your workflows, does a deep scan of your CI setup, then starts shipping optimizations.

[See a real migration PR →](https://github.com/better-auth/better-auth/pull/7933)

---

## AI in your CI

StarSling Runners are faster, smarter, and cheaper.

### Faster Builds

5th Gen AMD EPYC processors with zero-config caching that's 4X faster than GitHub

- 5th Gen AMD EPYC (30% faster than GitHub)
- Unlimited concurrency

### Self-driving

AI agents deep-scan your workflow runs and ship optimization PRs

- Caching — detect missing or misconfigured caches
- Dependency installation — implement faster install strategies (e.g., frozen lockfiles, parallel installs)
- Build steps — parallelize, remove redundant and optimize slow steps
- Tests — detect misconfigured test jobs and test database interactions
- Workflow structure — implement job splitting, matrix strategies, and dependency ordering

### Cheaper Than GitHub

4 vCPU Linux runners with 16 GB RAM at usage-based pricing

- $0.008/min vs GitHub's $0.012/min (33% cheaper)
- Queue time never billed
- AI optimizations included
- No seat fees

---

## Speed Comparison

| Workflow | Repo | GitHub Actions | StarSling | Speedup |
|----------|------|----------------|-----------|---------|
| [Combined Store Tests](https://github.com/mastra-ai/mastra/blob/main/.github/workflows/secrets.test-combined-stores.yml) | Mastra | 9m 22s | 2m 49s | 3.3x |
| [E2E](https://github.com/better-auth/better-auth/blob/main/.github/workflows/e2e.yml) | Better Auth | 7m 3s | 3m 11s | 2.2x |
| [CI](https://github.com/better-auth/better-auth/blob/main/.github/workflows/ci.yml) | Better Auth | 5m 55s | 4m 1s | 1.5x |

---

## Real PRs from StarSling agents

Pull Requests merged by customers. StarSling agents analyze and optimize your CI automatically.

- **Mastra** — [ci: shard E2E kitchen-sink across 3 parallel jobs](https://github.com/mastra-ai/mastra/pull/15888): Splits Playwright E2E across 3 parallel shards, cutting the blocking job from ~7.8m to ~4.3m wall.
- **Better Auth** — [chore(ci): optimize Playwright browser installs in E2E](https://github.com/better-auth/better-auth/pull/8073): Caches Playwright binaries across runs, eliminating redundant browser downloads.
- **Better Auth** — [chore: fix turbo cache configuration in ci](https://github.com/better-auth/better-auth/pull/7950): Corrects Turborepo cache config so builds actually hit cache instead of rebuilding.
- **Mastra** — [test(chroma): reduce fixed 2000ms waitForIndexing sleep to 200ms and add Docker healthcheck](https://github.com/mastra-ai/mastra/pull/13866): Replaces a hard-coded 2-second sleep with a proper Docker health check.
- **Mastra** — [test(couchbase): optimize vector test suite by replacing fixed sleeps with bucket.ping()](https://github.com/mastra-ai/mastra/pull/13965): Replaces 81s of blind sleeps with SDK health checks, saving ~4,130 CI min/mo.

---

## Install with a one-line change

Drop-in replacement for ubuntu-latest.

### Step 2: Change one line

Update your workflow file.

```yaml
# Before
runs-on: ubuntu-latest

# After
runs-on: starsling-ubuntu-24.04
```

---

## Pricing

2,000 free minutes. Then $0.008/min.

AI-powered optimizations included with every minute.

*Currently only offering Linux 4 vCPU runners with 16 GB RAM.*

### Free Trial (Free)

Try StarSling risk-free
— 2,000 minutes your first month

- 2,000 minutes included
- AI optimizations included
- Unlimited concurrency
- No credit card required

### Usage-Based ($0.008/min)

Pay only for what you use
— 33% cheaper than GitHub Actions

- AI optimizations included
- Queue time never billed
- Unlimited concurrency
- 99.99% SLA

### Enterprise (Custom)

For large organizations
— Volume discounts available

- Custom minute allocation
- SSO/SAML + dedicated account manager
- <1hr incident response
- Custom SLAs

### YC Deal

50% off your first year for all YC companies. Open source and scaling? We'll work out a special deal — just shoot us a note.

### Compared to GitHub Actions

| Runner | GitHub Actions | StarSling | Savings |
|--------|----------------|-----------|---------|
| 4 vCPU Linux | $0.012/min | $0.008/min | 33% |

---

## Supercharge your CI with AI

Join AI-native teams that have switched to StarSling Runners

- [Join the Waitlist](https://tally.so/r/b5OJVo)

---

## Links

- **Join the Waitlist:** [tally.so/r/b5OJVo](https://tally.so/r/b5OJVo)

### Social

- Twitter: [@starslingdev](https://twitter.com/starslingdev)
- LinkedIn: [starslingdev](https://www.linkedin.com/company/starslingdev)
- GitHub: [starslingdev](https://github.com/starslingdev)

## Markdown Pages

All pages on this site are available in Markdown format:

- [StarSling](https://starsling.dev/index.md)
- [Blog](https://starsling.dev/blog.md)
- [Blog — Announcing StarSling Runners: self-driving CI that optimizes itself](https://starsling.dev/blog/announcing-starsling-runners-self-driving-ci-that-optimizes-itself.md)
- [Privacy Policy](https://starsling.dev/privacy.md)
- [Terms of Service](https://starsling.dev/terms.md)

---

*See also: [llms.txt](https://starsling.dev/llms.txt) for a summary optimized for language models*