The verdict
If you write software, even as a solo founder or with AI agents writing part of it, pick GitHub. You get reviewable changes and a searchable history of every decision. If you run an online store and your newsletter tool sends everyone the same message, pick Klaviyo. A purchase or an abandoned cart can then trigger the right message by itself. If you are a B2B service business with long sales cycles and no store, neither is your first purchase. Klaviyo has no deals pipeline or account view, so a CRM such as HubSpot fits better, and GitHub only matters once you have code to look after. Do not choose between them on features. Choose by the problem in front of you.
Side by side
| 6 points compared | ||
|---|---|---|
| Starts at | $4/mo | $20/mo |
| Free plan | Yes | Yes |
| API | Yes | Yes |
| MCP server | Yes | Yes |
| Built-in AI | Yes | Yes |
| Integrations & API | Yes | Yes |
| Links |
Plans and pricing
GitHub
- FreeFree
- Team$4/mo/seat
- Enterprise$21/mo/seat
Klaviyo
- FreeFree
- Composer$20/mo
Who each is for
Choose GitHub if…
Pick GitHub if your team ships code, or if agents do. It suits technical teams and solo founders who want pull requests, review, automated checks and a trail of who changed what and why. Actions covers most build, test and deploy needs without a second tool, and hosting platforms and AI coding tools mostly assume you are on it. It has a free plan with private repositories, a public REST API and an official MCP server. It is not a planning tool, so decide early where your roadmap lives. Workflows also grow into YAML you maintain for years, so start with a small set.
Choose Klaviyo if…
Pick Klaviyo if you run an online store or a direct-to-consumer brand and want purchase and browsing behaviour to drive your messages. You build segments from what people bought and did, then run flows such as welcome series and abandoned carts, and you see revenue from each flow. Email, SMS, push and WhatsApp sit on one customer profile. There is a free plan and an official MCP server, so you can test with real data. Cost rises with your contacts and channels, so use the calculator with your real list before you decide. Klaviyo is only as good as the data your store sends it.
Other options worth a look
Connects web applications and automates workflows using event triggers and actions without writing code.
No-code platform for building branded forms, surveys, and quizzes without requiring any coding skills.
Connect APIs and build event-driven workflows with a visual builder that also allows custom code.
Turns recurring processes into checklist workflows with conditional steps, approvals and forms, without writing code.