CircleCI

CircleCI is a CI/CD platform that helps teams validate code changes, run tests, and ship software with automated workflows. It offers a free tier, usage-based paid plans, and support for many execution environments.

AI DevOpsアシスタント

AIテストQA

開発者ドキュメント生成

ウェブサイトを訪問

Overview

CircleCI is a CI/CD platform for validating code changes, running tests, and shipping software with automated workflows. The site positions it as “autonomous validation for the AI era,” with an emphasis on keeping code tested, trusted, and ready to ship around the clock.

Its product and pricing pages show a platform built around credits, flexible resource classes, and support for many execution environments, including Docker, Linux, Windows, Arm, macOS, self-hosted runners, and GPU. It offers a Free plan, a Performance plan for teams that want more scale and paid options, and a Scale plan for organizations that need enterprise controls and custom limits.

Core capabilities

Validate before release

Automates validation before changes are pushed so teams can catch issues early in the delivery process.

Intelligent automation

Runs agent-powered CI/CD workflows designed to keep pipelines moving with less manual intervention.

Wide runtime coverage

Supports a broad set of environments, including Docker, Linux, Windows, Arm, macOS, self-hosted runners, and GPU resources.

Flexible plan scaling

Scales from free usage to enterprise plans with larger resource classes, higher concurrency, and optional support add-ons.

Usage-based billing

Uses a credit-based model where credits can pay for active users, compute time, and add-on features.

Pipeline workflow tools

Includes workflow features such as Docker layer caching, private orbs, deploys, and flaky test detection on supported plans.

Common use cases

Continuous integration for code changes
Teams can run builds and tests automatically on each change so code is validated before it reaches production.
Scaling delivery pipelines
Organizations that need more throughput can use higher concurrency, larger resource classes, and plan tiers built for scale.
Standardizing release workflows
Platform and DevOps teams can standardize how software is built, tested, and released across multiple applications and environments.
Supporting mixed infrastructure
Teams working across specialized workloads can run jobs on Docker, Linux, Windows, macOS, Arm, or GPU resources as needed.
Choosing an appropriate plan
Organizations evaluating paid plans can compare Free, Performance, and Scale options, including support levels and usage-based billing.

Pros and Cons

Pros

Covers a wide range of environments, from standard Docker and VM workloads to macOS and GPU jobs.
Offers a free entry point with no credit card required.
Uses a usage-based credit model that can scale with team needs.
Provides plan options for teams that need more concurrency, larger resources, and enterprise controls.

Cons

The source does not expose full pricing details for every plan and resource class in the provided text.
Some support, limits, and add-on capabilities vary by plan, so readers need to compare tiers before choosing one.

FAQ

What is CircleCI used for?

CircleCI is a cloud-based CI/CD platform that validates code changes with automated builds, tests, and delivery workflows. It is designed to keep pipelines moving with minimal human oversight.

Does CircleCI have free and paid plans?

The pricing page shows a Free plan with no credit card required, a Performance plan that starts at $15 per month, and a Scale plan with annual billing and custom pricing.

How does CircleCI billing work?

CircleCI uses credits to pay for monthly active users, compute time, and some add-on features. Additional credits can be purchased on paid plans, and some usage such as network and storage beyond plan thresholds is billed separately.

What support options are available?

The pricing page lists support options that vary by plan, including community support on all plans, ticket-based global support on paid plans, and 8x5 or 24x7 SLA options on higher tiers.

Quick Facts

Category: Developer Tool
Product type: CI/CD platform
Primary use: Automated validation, testing, and shipping
Pricing model: Free tier and usage-based paid plans
Website: circleci.com
Supported environments: Docker, Linux, Windows, Arm, macOS, self-hosted runners, GPU

CircleCIの代替品

Trunk

Trunkは、フレークテストの検出・隔離、GitHubベースのワークフローでのマージキュー管理を支援するCI信頼性プラットフォームです。無料枠、従量課金プラン、SSOやオンプレミス対応のエンタープライズ向けオプションを提供します。

BotLab

BotLab is a tool for testing video-game bots by running them in simulated game clients, reviewing session logs, and comparing results in the Reactor. It offers a free tier for short sessions and a paid Pro plan for longer online runs.

Codesphere

Codesphereは、開発・デプロイ・運用を統合する仮想クラウド基盤です。オンプレミス、クラウド、ハイブリッド環境に対応し、企業や公共機関の移植性、セキュリティ、クラウド依存の低減に貢献します。

blop

blop は、リポジトリ内でブラウザテストをコードとして記述し、CIで実行、失敗をクラスタリングし、壊れたテスト修正用のPRも開けるQA agentです。

clickworker

clickworkerは、アンケート、店舗調査、タグ付け、リスト作成、クラウドテスト、AI学習データなど、人力で生成・検証されたデータを必要とする企業向けデータサービスを提供します。

Gatling

Gatlingは、負荷テストの作成・実行・分析・自動化を行うパフォーマンステストプラットフォームです。コード先行、ローコード、ノーコードに対応し、有料プランと大規模チーム向けEnterpriseも用意しています。