Trunk
Trunk is a CI reliability platform that detects, quarantines, and eliminates flaky tests while running enterprise merge queues for software engineering teams, particularly those operating large monorepos with high PR volumes, priced per committer with a freemium PLG entry and custom enterprise contracts.
- Company typePrivate
- Founded2021
- HeadquartersSan Francisco, United States
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What Trunk does
Trunk is a CI reliability platform that detects, quarantines, and eliminates flaky tests while running enterprise-grade merge queues for software engineering teams. Its two core products are Trunk Flaky Tests (GA October 2025) and Trunk Merge Queue, supported by add-ons for code quality (CLI/VS Code), CI benchmarking (CI Health Report), and on-premise deployment (BYOC in private preview). The platform integrates with all major CI providers (GitHub Actions, Jenkins, CircleCI, Buildkite, GitLab, Semaphore, Harness), build systems (Bazel, Nx, Turborepo), test runners (Jest, Cypress, Playwright, Pytest, Go tests, GoogleTest, Mocha), and ticketing/identity stacks (Linear, Jira, SAML/SSO). Notable technical differentiators include anti-flake protection that auto-merges PRs when downstream passing results prove earlier failures were transient, dynamic parallel queues that infer testing lanes from build graphs without configuration, optimistic merging against projected main state, and an MCP integration that hands structured diagnostic context to coding agents for autonomous fix generation.
Trunk serves software engineering organizations with monorepo architectures and high PR volumes. Named enterprise customers include Brex (~400 engineers), Faire (300 engineers), Descript (~70 engineers), BetterUp (80 engineers), Caseware (193 engineers), Glydways (72 engineers), AgencyAnalytics (46 engineers), and Metabase (49 engineers), with logo presence also at Gusto, Zillow, Cockroach Labs, Google, and Retool. The company is headquartered in San Francisco as a hybrid remote team of 11-50, founded in 2021 by Eli Schleifer (CEO, ex-Uber/Google) and Matt Matheson (CTO, ex-Uber/Microsoft). Trunk has raised $28.5 million total, comprising a $3.5M seed from Andreessen Horowitz in 2021 and a $25M Series A led by Initialized Capital with a16z participation in April 2022.
The business model combines product-led growth (free tier up to 5 committers and 5M test spans/month with no credit card required) with enterprise field sales (custom contracts with SSO, on-premise deployment, and 24/7 PagerDuty support). The Team tier is priced at $18 per committer per month, while the Enterprise tier uses multi-year contracts with custom billing and payment terms. Distribution is hybrid: self-serve sign-up at app.trunk.io for SMB and individual users, combined with Calendly-driven enterprise demos and dedicated sales contact ([email protected]) for large organizations. SOC 2 Type I and Type II compliance are maintained to clear enterprise procurement gates.
Trunk firmographics
Firmographics- Name
- Trunk
- Legal name
- Trunk Technologies Inc.
- Website
- https://trunk.io
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Trunk is a CI reliability platform that detects, quarantines, and eliminates flaky tests while running enterprise merge queues for software engineering teams, particularly those operating large monorepos with high PR volumes, priced per committer with a freemium PLG entry and custom enterprise contracts.
- Ownership category
- akta.pro rank
Trunk industry classification
Industry- Product category
- CI/CD Infrastructure Software
- NAICS
- Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- CI/CD Pipeline Engineering & Automation (BPAEAKAB)
Keywords
Where Trunk is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Trunk business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations
Revenue model
- Subscription - Per Committer Pricing: Monthly or annual subscription billed per committer (non-bot users who have made a commit to a private repo with Trunk enabled in the last 30 days). Three tiers: Free (up to 5 committers), Team ($18/committer/month), and Enterprise (custom pricing with SSO, on-premise, dedicated support).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free tier for small teams up to 5 committers with 5M test spans per month |
| Subscription | Monthly | Team tier for growing teams with unlimited committers and expanded test spans |
| Subscription | Multi-year contract | Enterprise tier with custom pricing, SSO, on-premise, and 24/7 support |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
Trunk product offering
Product offeringCore offering
Trunk provides a CI reliability platform that detects, quarantines, and eliminates flaky tests while offering an enterprise-grade merge queue that intelligently batches, parallelizes, and merges pull requests to keep CI pipelines green. The platform integrates with any CI provider (GitHub Actions, CircleCI, Buildkite, Jenkins, GitLab, Semaphore, Harness), any test runner, and any language, and is sold to software engineering teams on a per-committer subscription.
Product overview
Trunk is a CI reliability platform consisting of two core products: Trunk Flaky Tests for detecting, quarantining, and eliminating flaky tests, and Trunk Merge Queue for enterprise-grade PR merge management. The platform integrates with any CI provider (GitHub Actions, Jenkins, CircleCI, Buildkite) and build system (Bazel, Nx, Turborepo). Additional offerings include a free CI Health Report tool for benchmarking reliability metrics, Code Quality enforcement via CLI/VS Code, and Bring Your Own Cloud (BYOC) deployment for enterprise data residency requirements.
Differentiator
Problem solved
Functional benefit
Products and services
- Trunk Flaky Tests CI reliability product that automatically detects, quarantines, and eliminates flaky tests across any language, any test runner, and any CI provider. Includes AI-powered failure fingerprinting, test status history, environment segmentation, integrated Linear/Jira ticketing, and Slack notifications for engineering teams struggling with unreliable CI.
- Trunk Merge Queue Enterprise merge queue that batches, parallelizes, and merges pull requests while cutting CI costs and preventing broken main branches. Includes anti-flake protection, intelligent batching with auto-bisection, dynamic parallel queues inferred from build graphs, optimistic merging, and predictive testing against the projected state of main for engineering teams operating monorepos and high-PR-volume repositories.
- CI Health Report Free benchmarking audit tool that measures CI reliability metrics against industry-leading teams. Read-only GitHub App integration reports main pass rate, PR pass rate, merge queue performance, flaky re-run costs, CI wait times, and workflow-level re-run breakdown for engineering leaders evaluating their CI health.
Quantifiable outcome
- Brex: 30% P90 time-to-merge reduction, 50% fewer merge queue failures
- +5 more outcomes
Companies that use Trunk
Customer profileNamed customers13 records
Segments3 records
Ideal customer profiles2 records
Trunk technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration30 records
AI capability7 records
Feature7 records
Trunk partnerships and signals
Strategic signalScale indicators4 records
Recent moves6 records
Expansion highlights6 records
Trunk competitors and assessment
Company assessmentDirect peers
- Buildkite: Buildkite offers a Test Engine with flaky test detection and analytics that overlaps directly with Trunk Flaky Tests, and its CI platform competes for the same engineering-team wallet. Trunk runs explicit comparison pages against Buildkite, signaling direct head-to-head competition in the CI reliability category.
- Launchable: Launchable focuses on test selection, flaky test reduction, and CI feedback optimization — a closely adjacent problem space to Trunk Flaky Tests. Both target engineering leaders trying to cut CI time and cost via smarter test execution.
- Mergify: Mergify is a dedicated merge queue and PR automation product that competes most directly with Trunk Merge Queue. Trunk maintains a dedicated comparison page (trunk-vs-mergify) targeting the same buyer evaluating merge queue solutions on GitHub.
Broad incumbents
- Semaphore: Semaphore is a CI/CD platform with test reliability and parallelization features serving engineering teams with monorepos and high PR volumes — the same buyer Trunk targets. Competes on the broader CI platform layer rather than as a dedicated reliability overlay.
- GitHub: GitHub ships a native merge queue and is expanding CI/test reliability features inside GitHub Actions, the platform on which Trunk Merge Queue is built. Trunk explicitly positions against GitHub's native offering via comparison pages, making GitHub the dominant broad incumbent in the same problem space.
- Harness: Harness provides CI/CD plus a broader software delivery platform including test intelligence and flaky test management. It overlaps with Trunk's CI reliability wedge as part of a wider enterprise DevOps portfolio and is a Trunk-integrated CI provider as well as competitor.
- CircleCI: CircleCI is an enterprise CI/CD platform with flaky test insights and test splitting features that overlap with Trunk Flaky Tests. As a broader CI platform, it competes indirectly by bundling reliability features into its core CI offering.
- GitLab: GitLab offers an integrated DevSecOps platform with merge request controls and CI reliability tooling as part of a much broader suite. It competes with Trunk by absorbing merge queue and test reliability into its all-in-one platform play.
Emerging players
- Datadog Test Optimization: Datadog's Test Optimization product (alongside CI Visibility) provides flaky test detection and analytics inside the broader Datadog observability platform. It overlaps with Trunk Flaky Tests but as a module within a much larger monitoring suite — competing on bundling rather than depth.
- Codefresh: Codefresh (now part of Octopus Deploy's portfolio) focuses on GitOps-based CI/CD and Argo workflows. Its overlap with Trunk is partial — adjacent in the CI reliability and PR-merge workflow space, but with a different architectural approach centered on Kubernetes-native pipelines.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Trunk social profiles
Digital presenceTrunk compliance and trust
Trust signalCompliance3 records
Trunk financial estimates
Financial estimateRevenue estimate
Valuation estimate
Trunk leadership team
Management profileNumber of profiles
Profiles4 records
Trunk funding detail
Funding detailFunding overview
Funding rounds3 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Trunk M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Trunk
What does Trunk do?
Trunk provides a CI reliability platform that detects, quarantines, and eliminates flaky tests while offering an enterprise-grade merge queue that intelligently batches, parallelizes, and merges pull requests to keep CI pipelines green. The platform integrates with any CI provider (GitHub Actions, CircleCI, Buildkite, Jenkins, GitLab, Semaphore, Harness), any test runner, and any language, and is sold to software engineering teams on a per-committer subscription.
Is Trunk a public or private company?
Trunk is a private company. It is classified as venture growth investor backed and is currently operating.
When was Trunk founded?
Trunk was founded in 2021. It employs 51 to 100 people.
Where is Trunk based?
Trunk is headquartered in San Francisco, United States, in the North America region.
How does Trunk make money?
One revenue line is on record: subscription - Per Committer Pricing.
Who are Trunk's main competitors?
Direct peers on record are Buildkite, Launchable and Mergify. Broad incumbents are Semaphore, GitHub, Harness, CircleCI and GitLab. Emerging players are Datadog Test Optimization and Codefresh.
Does Trunk have an API?
Yes. Trunk offers a public REST API for queue configuration and PR operations, plus lifecycle and batch webhooks with detailed failure reasons. The API supports submitting PRs for testing and merging, cancelling them, and accessing status info to fine-tune the queue. Queue activity flows into Prometheus-compatible endpoints for Grafana and Datadog integration. Developer documentation is at docs.trunk.io.
What industry is Trunk in?
Trunk's product category is CI/CD Infrastructure Software. Its primary akta.pro industry code is BPAEAKAB, CI/CD Pipeline Engineering & Automation. Its NAICS code is 5415 and its SIC code is 7372.