Comparison

Bazel vs Semaphore

No clear leader: Semaphore (62.5) and Bazel (61.6) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Bazel full profile →Semaphore full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

Bazel62

Semaphore63

Attribute comparison across 2 tools
Attribute	Bazel	Semaphore
vioscaleAI score	62 / 100low · 42%	63 / 100medium · 70%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	low
Transparentpricing.transparent	✓	✗
Integrations
Countintegrations.count	-	1
Security
Disclosure policysecurity.disclosure_policy	✓	-
Iso27001security.iso27001	-	✓
Pcisecurity.pci	-	✓
Scorecardsecurity.scorecard	5.7	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=bazel&per_page=100 · Last 12m: 0	-
Reliability
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	3	-
Github starsadoption.github_stars	25,942	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
Release
Cadence daysrelease.cadence_days	4	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	Apache-2.0	-
Language
Primarylanguage.primary	Java	-
Content
Faqcontent.faq	5 items	5 items

Score

vioscaleAI score

Bazel62 / 100low · 42%

Semaphore63 / 100medium · 70%

Pricing

Free tier

Bazel✓

Semaphore✓

Model

Bazelopen_source

Semaphorefreemium

Price level

Bazelfree

Semaphorelow

Transparent

Bazel✓

Semaphore✗

Integrations

Count

Bazel–

Semaphore1

Security

Disclosure policy

Bazel✓

Semaphore–

Iso27001

Bazel–

Semaphore✓

Pci

Bazel–

Semaphore✓

Scorecard

Bazel5.7

Semaphore–

Soc2

Bazel–

Semaphore✓

Vulnerabilities

BazelCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=bazel&per_page=100 · Last 12m: 0

Semaphore–

Reliability

Status page

Bazel–

Semaphore✓

Adoption

Dependent repos

Bazel3

Semaphore–

Github stars

Bazel25,942

Semaphore–

Activity

Commits last 30d

Bazel100

Semaphore–

Release

Cadence days

Bazel4

Semaphore–

History

Bazel20 items

Semaphore–

License

Spdx

BazelApache-2.0

Semaphore–

Language

Primary

BazelJava

Semaphore–

Content

Faq

Bazel5 items

Semaphore5 items

Capabilities

Feature-by-feature on the axes that matter for ci/cd tools. “-” means undocumented, not absent.

Capability comparison for CI/CD Tools
Capability	Bazel	Semaphore
Deployment
Hosting	Self-hosted only	Cloud + self-hosted
Self-hosted runners	✓	✓
Core
Config-as-code pipelines	-	✓
Matrix / parallel builds	✓	✓
Build
Container-native builds	-	✓
Performance
Build caching	✓	-
Security
Secrets management	-	-
Delivery
Deployment environments & approvals	-	-
Ecosystem
Reusable actions / marketplace	✓	-

Deployment

Hosting

BazelSelf-hosted only

SemaphoreCloud + self-hosted

Self-hosted runners

Bazel✓

Semaphore✓

Core

Config-as-code pipelines

Bazel-

Semaphore✓

Matrix / parallel builds

Bazel✓

Semaphore✓

Build

Container-native builds

Bazel-

Semaphore✓

Performance

Build caching

Bazel✓

Semaphore-

Security

Secrets management

Bazel-

Semaphore-

Delivery

Deployment environments & approvals

Bazel-

Semaphore-

Ecosystem

Reusable actions / marketplace

Bazel✓

Semaphore-

What each one is

The product in its own terms, so the numbers below have context.

Bazel

An open-source build and test system designed to efficiently compile and test projects written in multiple programming languages while supporting builds for different target platforms. It uses intelligent caching and parallel execution to speed up builds and scales to handle large codebases across multiple repositories.

Independently observed

Semaphore

A delivery platform that combines CI/CD capabilities with AI-driven features through a command-line interface.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Bazel

Open sourceFree tier

as of 2026-10-13verify ↗

Semaphore

from $0.00/moUsage-basedFree tier

Pay-per-minute metered compute: $0.0025/min (self-hosted) to $0.09/min (MacOS). Includes 20 concurrent jobs, $15/month free credits, 9.6 GB cache, and free support. Optional modular support and success services.

Compute - Ubuntu ARM$0.003–$0.012/min depending on vCPU
Compute - Ubuntu x64$0.0075–$0.015/min depending on vCPU
Compute - MacOS$0.09/min
Compute - Self-Hosted$0.0025/min

as of 2026-08-03verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Bazel	Semaphore
macOSPlatforms	✓	✗
WindowsPlatforms	✓	✗
LinuxPlatforms	✓	✗
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✗
HybridDeployment	✓	✗

Platforms

macOS

Bazel✓

Semaphore✗

Windows

Bazel✓

Semaphore✗

Linux

Bazel✓

Semaphore✗

CLI

Bazel✓

Semaphore✓

Deployment

Cloud / SaaS

Bazel✗

Semaphore✓

Self-hosted

Bazel✓

Semaphore✓

On-premise

Bazel✓

Semaphore✗

Hybrid

Bazel✓

Semaphore✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Bazel

Not documented yet.

Semaphore

1 total

Flowdock

Independently observed

Still deciding?

Bazel or Semaphore: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.