Semaphore scores highest on Reliability (75) and lowest on Ease of use (66)Verified
If cost matters most: Semaphore has a free plan, offers one paid plan at US$0.00, ranks #9 in Coding.
Five-factor score
Value72
Reliability75
Ease of use66
Strongest: Reliability 75 Weakest: Ease of use 66
Free plan
Has a free plan
Check rhythm
Checked 6 times in 30 days
Latest 2026-10-23
Evidence
2 facts
1 double-checked
Category rank
#9
in Coding
Common Pitfalls
Auto-admitted challenger candidate: data checked once, not yet triple-verified by a human. Treat the free allowance and commercial terms as whatever the official site says today.
View Change History
2026-10-21~2026-10-22Routine checks ran 2 times; no price or plan changes
2026-10-21~2026-10-23Automated checks could not be matched line by line with the official site 3 times (page redesign, region-based pricing or usage-based billing); not judged to be a price change; the verified date was not updated, pending manual review
Continuously re-checked, every fact dated
Book editions on Amazon
Explore two language/cover editions about AI agents and AI work workflows. Author: AM&PM Editorial Team.
Fast, cost-effective CI/CD platform engineered for ultra-fast software builds, tests, and automated delivery.
How far the free plan goes
US$15 in free compute credits every month (about 2,000 minutes of Ubuntu x64 2-vCPU build time), including 20 concurrent jobs, 20 GB of monthly transfer and 100 GB of build artifact storage; teams with revenue under US$5 million (500 × US$10,000) and 50 or fewer people also get a free open-source Enterprise license
Free plan limit
Features
Free quota
Description
Free-tier allowance
US$15 in free compute credits every month (about 2,000 minutes of Ubuntu x64 2-vCPU build time), including 20 concurrent jobs, 20 GB of monthly transfer and 100 GB of build artifact storage; also, for teams with revenue under US$5 million (500 × US$10,000) and 50 or fewer people
As seen on the official site on the day of entry; see the official site for details
No monthly subscription, minimum spend, or seat fees; billing is purely usage‑based: Ubuntu ARM starts at US$0.003/minute (2 vCPU), Ubuntu x64 starts at US$0.0075/minute (2 vCPU), macOS is US$0.09/minute (4 vCPU), self‑hosted Runner is US$0.0025/minute; technical support plans are purchased separately (Basic is US$50/month).
Which Model
Semaphore
Usage Quota
No monthly subscription, minimum spend, or seat fees; billing is purely usage‑based: Ubuntu ARM starts at US$0.003/minute (2 vCPU), Ubuntu x64 starts at US$0.0075/minute (2 vCPU), macOS is US$0.09/minute (4 vCPU), self‑hosted Runner is US$0.0025/minute; technical support plans are purchased separately (Basic is US$50/month).
Priced solely by compute minutes (Compute Minutes), with no seat fees, making it ideal for team scaling. Offers dedicated cache servers and private Docker Registry options (each US$400/month). Annual payment plans provide project discounts; please contact the support desk.
Looking for Semaphore deals, discounts or promo codes? We check the official site automatically every day, review changes by hand, and date-stamp every entry.
