Comparison

Alembic vs Kysely

On the evidence we track, Kysely 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 formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Alembic61
★Kysely74
Score
vioscaleAI score
Alembic61 / 100low · 42%
Kysely74 / 100high · 78%
Pricing
Free tier
Alembic✓
Kysely✓
Model
Price level
Alembicfree
Kyselyfree
Transparent
Alembic–
Kysely✓
Integrations
Count
Alembic–
Kysely21
Adoption
Dependent repos
Alembic52,456
Kysely1,155
Github stars
Alembic4,444
Kysely14,269
Package downloads weekly
Alembic–
Activity
Commits last 30d
Alembic18
Kysely59
Release
Cadence days
Alembic17
Kysely10
History
Alembic20 items
Kysely20 items
License
Spdx
AlembicMIT
KyselyMIT
Language
Primary
AlembicPython
Content
Faq
Alembic4 items
Kysely6 items

Capabilities

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

Core
Type-safe queries
Alembic-
Kysely✓
Schema migrations
Alembic✓
Kysely✓
Relations / joins API
Alembic✓
Kysely✓
Languages
AlembicPython
KyselyTypeScript, JavaScript (Node, Deno, Bun, Cloudflare Workers, browsers)
Modelling
Schema-first modelling
Alembic✓
Kysely✓
Flexibility
Raw SQL escape hatch
Alembic✓
Kysely✓
Portability
Multiple database backends
Alembic✓
Kysely✓
Ops
Connection pooling
Alembic-
Kysely✗
DX
Data browser / studio
Alembic-
Kysely✗

What each one is

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

Alembic

A framework for creating, managing, and applying database schema changes in Python applications, with support for automatic migration detection, multiple database backends, and both scripted and programmatic workflows.

Independently observed

Kysely

Leader

A JavaScript and TypeScript SQL query builder that provides compile-time type safety and database schema validation. It works across multiple runtimes (Node, Deno, Bun, Cloudflare Workers, browsers) with zero runtime dependencies and emphasizes composable, type-safe queries over higher-level abstractions.

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 ↗

Kysely

Leader
Open sourceFree tier

Completely free and open source (MIT license)

as of verify ↗

Platform & deployment

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

Platforms
Web
Alembic✗
Kysely✓
CLI
Alembic✓
Kysely✗
Deployment
Cloud / SaaS
Alembic–
Kysely✓
Self-hosted
Alembic–
Kysely✓

Integrations

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

Alembic

Not documented yet.

Kysely

Leader
25 total
  • Supabase
  • Cursor
  • Windsurf
  • GitHub Copilot
  • ChatGPT
  • Claude
  • Claude Code
  • AirTrail
  • AWS Blocks
  • Conar
  • EmbedPDF
  • Hot Updater
  • inlang
  • Notesnook
  • OpenClaw
  • Reflect
  • Sink
  • Stacks
  • StudioCMS
  • Tunarr
  • ZenStack
  • PostgreSQL
  • MySQL
  • SQLite
  • +1 more
Independently observed
Still deciding?

Alembic or Kysely: 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.