Comparison

Alembic vs Sequelize

On the evidence we track, Sequelize leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Alembic66
Sequelize74
Score
Vioscale score
Alembic66 / 100low · 43%
Sequelize74 / 100medium · 72%
Pricing
Free tier
Alembic
Sequelize
Model
Sequelizecommercial
Price level
Alembicfree
Sequelizefree
Transparent
Alembic
Sequelize
Adoption
Dependent repos
Alembic52,456
Sequelize193,226
Github stars
Alembic4,340
Sequelize30,377
Package downloads weekly
Alembic
Sequelize2,842,247
Activity
Commits last 30d
Alembic15
Sequelize7
Release
Cadence days
Alembic17
Sequelize20
History
Alembic20 items
Sequelize20 items
License
Spdx
AlembicMIT
SequelizeMIT
Language
Primary
AlembicPython
SequelizeTypeScript
Market
Availability
Alembic

Capabilities

Feature-by-feature on the axes that matter for orm & database tools. “-” means undocumented, not absent.

Core
Type-safe queries
Alembic-
Sequelize
Schema migrations
Alembic
Sequelize
Relations / joins API
Alembic
Sequelize
Languages
AlembicPython
SequelizeJavaScript, TypeScript
Modelling
Schema-first modelling
Alembic
Sequelize
Flexibility
Raw SQL escape hatch
Alembic
Sequelize-
Portability
Multiple database backends
Alembic
Sequelize
Ops
Connection pooling
Alembic-
Sequelize-
DX
Data browser / studio
Alembic-
Sequelize-

What each one is

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

Alembic

Alembic is an open-source database migrations tool that provides transactional DDL support, auto-generation of migration scripts, and non-linear versioning with dependency-graph structure for managing database schema changes.

Independently observed

Sequelize

Leader

Sequelize is an ORM that bridges JavaScript and TypeScript applications with multiple relational databases including PostgreSQL, MySQL, MariaDB, SQLite, Oracle, SQL Server, Snowflake, and DB2. It provides declarative schema modeling, relationship definitions, transaction support, and flexible data loading strategies.

Independently observed

Pricing

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

Alembic

Open sourceFree tier
as of verify ↗

Sequelize

Leader
Open sourceFree tier
as of verify ↗

Platform & deployment

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

Platforms
CLI
Alembic
Sequelize
Deployment
Self-hosted
Alembic
Sequelize

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