AIchitect
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123 tools · 10 stacks
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AI tools are all over the place. This is the full landscape — 123 tools across 12 categories, mapped and connected. Ready to narrow it down? Build your stack →

Stack Layers
What are you building and how is it defined?
How do you write and ship code?
How does your AI think and act?
Which models and infrastructure power it?
How do you build, observe, and extend it?
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These tools competes with
Speakeasy
vs
Fern

Choose Speakeasy when…

  • •You want auto-generated SDKs from your OpenAPI spec
  • •You're publishing a developer-facing API with multiple SDKs
  • •SDK quality and type safety across languages matter

Choose Fern when…

  • •You want type-safe SDKs and docs from your API spec
  • •You need SDKs in TypeScript, Python, Go, and more
  • •You want a Stripe-quality SDK without the manual work
Field
Speakeasy
Fern
Category
Specifications
Specifications
Type
SaaS
OSS
Free Tier
✓ Yes
✓ Yes
Plans
Growth: $250/mo
Managed: Custom
Stars
—
⭐ 3,000

Speakeasy

Takes an OpenAPI spec and generates polished, type-safe client SDKs across multiple languages, Terraform providers, and MCP servers for AI agent integration. Handles pagination, retries, webhooks, and streaming out of the box. Increasingly positioning itself as the API platform for the agent era.

Fern

Takes an OpenAPI spec and generates hand-crafted-quality SDKs across TypeScript, Python, Go, Java, Ruby, C#, and PHP, plus integrated documentation sites. SDKs and docs stay in sync from a single source of truth. Used by Cohere, ElevenLabs, and Merge.

Speakeasy Website ↗GitHub ↗
Fern Website ↗GitHub ↗

Shared Connections (5)

Swagger / OpenAPIRedoclyStoplightStainlessOpenAPI Generator

Only Speakeasy (3)

FernMCP SDK (TypeScript)MCP SDK (Python)

Only Fern (2)

SpeakeasyMintlify
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