Best API Documentation Tools · head-to-head
Stoplight vs GitBook
A sourced, side-by-side comparison for api documentation tools. Stoplight has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
Stoplight has the lower entry price — Stoplight starts at $0/mo, GitBook at $0/mo. Free tier: Stoplight Yes, GitBook Yes. HIPAA: Stoplight —, GitBook —.
As of 2026-06-15 · figures link to their source below
Side by side
Stoplight
$0/mo entryGitBook
$0/mo entrySources — Stoplight: stoplight.io (verified 2026-06-15) · GitBook: gitbook.com (verified 2026-06-15)
Key features
Stoplight: Visual OpenAPI/JSON Schema designer; Instant mock servers; Style guide enforcement across teams; Collaborative API design with branching
GitBook: Per-site pricing model (not per-seat only); GitBook Agent for AI-powered content; Adaptive content (personalized docs); SOC2 Type II and ISO 27001 certified