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Redocly CLI vs OpenAPI: catalog facts
Redocly CLI	OpenAPI
Best for: API developers who manage and validate API descriptions from the command line	Best for: Developers maintaining and validating API specification files
Free The CLI is free and open source under the MIT license; Redocly also offers commercial services.	Free The CLI is available without charge under the MIT License.
Command line	Windows, macOS, Linux, Command line
Lints and validates API descriptions Bundles, transforms and documents OpenAPI projects All 3 strengths for Redocly CLI Lints and validates API descriptions Bundles, transforms and documents OpenAPI projects Generates typed TypeScript clients	Validates and lints OpenAPI, Swagger, Arazzo, and Overlay documents Bundles references, upgrades specifications, and compares or applies overlays All 3 strengths for OpenAPI Validates and lints OpenAPI, Swagger, Arazzo, and Overlay documents Bundles references, upgrades specifications, and compares or applies overlays Includes interactive exploration and structural queries for API specifications
Version 2 requires Node.js 22.12.0 or newer Some API lifecycle features are part of commercial Redocly services	Limitations not stated
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Redocly CLI redocly.com/docs/cli Catalog checked October 8, 2026	Official website Full listing and sources Sources for OpenAPI github.com/speakeasy-api/openapi/releases/tag/v1.25.3 github.com/speakeasy-api/openapi/blob/main/README.md github.com/speakeasy-api/openapi/blob/main/LICENSE Catalog checked October 5, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.