CircleCI vs Fly.io
Compare CircleCI and Fly.io on features, pricing, and buyer fit using the same researched criteria.
CircleCI
CI/CD platform — not a git host. Free (6k build minutes / 30k credits framing); Performance from $15/mo; Scale contact. Peer of GitHub Actions / GitLab CI.
Best for
- • Teams that want specialist CI/CD against an existing GitHub/GitLab/Bitbucket remote
- • Buyers comparing CircleCI Performance $15 to GitHub Actions minutes
- • Orgs that do not want to move source control in order to buy CI
Starting from $15.00/user/mo
Free plan available
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
CircleCI is better for
- ✓ Free plan
Fly.io is better for
- ✓ Starting pricing
Tie
- • Integrations
- • Security & admin
Choose CircleCI if: Teams that want specialist CI/CD against an existing GitHub/GitLab/Bitbucket remote
Choose Fly.io if: Teams that want PAYG microVM/app hosting close to users
Fly.io
Cloud PaaS / microVM app platform — PAYG; shared-cpu-1x from ~$1.94/mo in lower-cost regions. Support Standard $29/mo is support, not hosting. Does not outrank Render 7.9.
Best for
- • Teams that want PAYG microVM/app hosting close to users
- • Buyers comparing Fly.io $1.94 shared-cpu-1x to Render Pro $25 + compute
- • Orgs that will not treat $29 Support as the hosting SKU
Starting from $1.94/user/mo
No free plan
Pros & cons
A balanced look at where each product shines — and where it falls short.
CircleCI
Strengths in greenPros
- Stronger on free plan
Cons
- Trails on starting pricing
Best for
Teams that want specialist CI/CD against an existing GitHub/GitLab/Bitbucket remote
Fly.io
Trade-offs in redPros
- Stronger on starting pricing
Cons
- Trails on free plan
Best for
Teams that want PAYG microVM/app hosting close to users
Choose if…
Choose CircleCI if
- Teams that want specialist CI/CD against an existing GitHub/GitLab/Bitbucket remote
- Buyers comparing CircleCI Performance $15 to GitHub Actions minutes
- Orgs that do not want to move source control in order to buy CI
Choose Fly.io if
- Teams that want PAYG microVM/app hosting close to users
- Buyers comparing Fly.io $1.94 shared-cpu-1x to Render Pro $25 + compute
- Orgs that will not treat $29 Support as the hosting SKU
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