#6 in API DevelopmentUpdated 2026-08

Insomnia

by Insomnia · Open-source API platform for design, debugging, testing and mocking

66.3 — BenchRank score out of 100

Homepage
Pricing page

Visit website See full API Development ranking

Overview

Insomnia is Kong's API development platform for designing, debugging, testing and mocking APIs over HTTP, REST, GraphQL, gRPC, SOAP, WebSockets and Socket.IO. Collections, specs and tests can be kept in local storage, in a Git repository, or in the cloud with optional end-to-end encryption. The Inso CLI validates specs in pipelines, and a native MCP client tests MCP servers.

Best for: API teams that need one tool to design, debug, test and mock APIs with local, Git or cloud storage
Pricing: Free Essentials tier, then $12 per user/month for Pro and $45 per user/month for Enterprise, with 17% off annual billing.
Runs on: WebmacOSLinuxSelf-hosted

Strengths and trade-offs

Strengths

Free tier covers HTTP, gRPC, GraphQL, WebSocket and SSE clients
Data stored locally, in your Git repo, or in the cloud
Inso CLI lints and validates OpenAPI specs in CI/CD pipelines
Unlimited collection runs on every plan, including the free one

Trade-offs

Mock requests metered: 1,000/month free, then $10 per 25,000
Git Sync free for 3 users only; more needs Pro at $12/user/month
SSO, SCIM and storage location controls are Enterprise-only at $45/user/month
Free tier lists no support level and no payment options

Pricing

Published plans from Insomnia’s own pricing page, in USD. Usage charges and add-ons may apply on top.

Insomnia pricing tiers, monthly rates in USD
Plan	Monthly	Includes
Essentials	—per user	Unlimited Git Sync projects for up to 3 users Unlimited cloud/local projects, collection runs and environments 1,000 mock server requests per month, then $10 per 25,000 Inso CLI, end-to-end encryption and custom linting rules
Pro	$12per user	Everything in Essentials, with unlimited users and organisations Git Sync projects for all users Role-based access control 10,000 mock server requests per month
Enterprise	$45per user	Self-serve up to 50 users; contact sales for larger teams SSO (SAML/OIDC), SCIM and domain capture controls Mandated project storage location and Kong Konnect integration Unlimited mock server requests, enterprise support and SOC 2 access

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 60 out of 100
API quality: 20 out of 100
Documentation: 90 out of 100
Agent friendliness: 68 out of 100
Pricing transparency: 100 out of 100
Changelog: 100 out of 100
Marketing site structure: 55 out of 100
Operational trust: 60 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 85 out of 100
Maintenance: 100 out of 100

This doesn’t look right — report a problem with Insomnia’s score

Alternatives in API Development

Ranked 1
86 — BenchRank score out of 100
Postman
Postman · API platform for designing, testing, monitoring and distributing APIs
Best for: Development teams building, testing and managing APIs who want one tool from spec to monitoring.
Ranked 2
84.8 — BenchRank score out of 100
Scalar
Scalar · API docs, SDKs, MCP servers and an API client from one OpenAPI file
Best for: API teams that want docs, SDKs and MCP servers generated from one OpenAPI document
Ranked 3
72.5 — BenchRank score out of 100
Fern
Fern · Docs, SDKs and a CLI generated from your API spec
Best for: Teams with an OpenAPI-style spec who want hosted docs, generated SDKs and a CLI from one source