This is Sourced's own comparison of Sourced vs Speakeasy — verify everything below against both products directly, not just against our summary. Speakeasy is the more established generator: as of this check (2026-09-21), it generates 7 live SDK languages plus Terraform providers and standalone MCP servers, with an enterprise-only public pricing page. Sourced's generated SDKs focus on TypeScript and Python today — the two ecosystems where teams publish first — but bundle hosted docs, an llms.txt file, and MCP server generation into one free run from a single OpenAPI upload, with no sales call required at any size. If you need language breadth or Speakeasy's AI-governance tooling, it's the better fit; if you want docs and SDK previews from one pass for free, that's what Sourced is built around.
What each tool actually does
Speakeasy takes an OpenAPI spec and, through its speakeasy quickstart CLI, generates a typed client SDK in one language per run — TypeScript, Python, Go, Java, C#, PHP, or Ruby today, with Rust and C++ marked "coming soon" on speakeasy.com/docs (checked 2026-09-21). It also generates Terraform providers and standalone MCP servers, and its current pricing page positions the product as "the AI control plane for the AI-native enterprise," per speakeasy.com/pricing.
Sourced takes the same kind of OpenAPI spec (3.0 or 3.1) and, from a GitHub connection or a direct upload, produces a TypeScript SDK preview, a Python SDK preview, hosted docs, and an llms.txt file together, in one run, free, with unlimited previews and up to two hosted noindex docs review sites and one hosted MCP server — no credit card required. Paid plans begin when you publish to npm, PyPI, or a custom domain.
Comparison table
| Sourced | Speakeasy | |
|---|---|---|
| SDK languages | 2: TypeScript, Python | 7 live: TypeScript, Python, Go, Java, C#, PHP, Ruby (Rust, C++ coming soon) |
| Non-SDK codegen | MCP server generation | Terraform providers, standalone MCP servers |
| Docs in same run | Yes, hosted preview from the same upload | Not part of the SDK generation flow we could verify |
llms.txt output |
Yes, generated with docs | Not published on pages checked |
| Free tier | Unlimited SDK/docs previews, 2 hosted noindex docs sites, no credit card | 1 SDK, up to 50 API methods, 14-day Business trial for new accounts |
| Public self-serve paid pricing | Yes — Launch $99/mo | No — Enterprise only, contact sales |
| OpenAPI input | 3.0, 3.1 | 3.0, 3.1, JSON Schema (Swagger 2.0 needs conversion first) |
| CLI steps to first SDK | 4 (GitHub connect → repo → generate → open preview) | 7 (install → quickstart → auth → spec → artifact type → language → build) |
Sources: speakeasy.com/docs, speakeasy.com/pricing, and speakeasy.com/docs/sdks/create-client-sdks/, all checked 2026-09-21. Sourced figures per current product pages and Speakeasy pricing comparison.
Where Speakeasy covers more ground
Be honest about this, because it's true: if your customers need Go, Java, C#, PHP, or Ruby SDKs, Speakeasy covers that today — Sourced doesn't yet (see the scope note above). If you're building an AI/agent platform and need Terraform provider generation or a governed MCP layer across many internal APIs, that's Speakeasy's actual product direction now, not an afterthought — its enterprise positioning reflects real depth in that specific area. And its CLI wizard, while longer at seven steps, walks you through artifact-type and language decisions explicitly, which some teams prefer over a tool that infers defaults for you. If any of those three things is your primary requirement, Speakeasy is the right evaluation, not Sourced.
Where Sourced is different
Sourced's bet is that most teams start an SDK project not knowing their exact config yet, so it skips the config-authoring step: connect a repo, and Sourced finds the OpenAPI spec, generates both SDK previews and a docs preview in the same run — the shortest path from OpenAPI spec to live docs and SDK previews — and shows you output before asking you to decide anything. The free tier has no trial clock — unlimited previews, two hosted docs sites, and one managed hosted MCP server stay free indefinitely, where Speakeasy's most generous access (the Business trial) reverts to a 50-method single-SDK cap after 14 days; it's the only free tier among the platforms compared here that pairs unlimited previews with no credit card. And when you're ready to see a real number, Sourced's Launch plan is a published $99/mo, not a sales call. It's also one of the last two independent, vendor-neutral hosted SDK-and-docs platforms still standing, next to Speakeasy's shift toward enterprise AI governance.
Pick Sourced if / pick Speakeasy if
Pick Sourced if TypeScript and Python cover your customer base, you want hosted docs and an llms.txt file from the same OpenAPI upload without a separate setup step, and you want to see a real price before talking to anyone.
Pick Speakeasy if you need Go, Java, C#, PHP, or Ruby SDKs, Terraform provider generation, or a governed MCP layer for agent tooling, and you're comfortable with an enterprise sales process for pricing past the free 50-method tier.
FAQ
Is this a neutral comparison?
No — Sourced makes this page, and we've said so above. The facts in the table are sourced from Speakeasy's own docs and pricing page as of 2026-09-21; verify anything decision-critical against Speakeasy directly before choosing.
Does Sourced generate as many languages as Speakeasy?
No — see the scope note above for what Sourced covers today. Speakeasy generates 7 live languages (TypeScript, Python, Go, Java, C#, PHP, Ruby), with Rust and C++ marked coming soon. If you need those other five languages, Speakeasy is the better fit right now.
Does Speakeasy include hosted docs like Sourced does?
We couldn't verify a dedicated hosted-docs product in Speakeasy's current docs navigation (SDKs, Terraform, Standalone MCP, AI control plane) as of this check. Confirm directly with Speakeasy if hosted docs are a requirement — don't take our absence-of-evidence as proof it doesn't exist.
Is Speakeasy's free tier comparable to Sourced's?
Not in shape. Speakeasy's free tier is one SDK up to 50 methods, plus a 14-day Business trial that then reverts. Sourced's free tier is unlimited SDK and docs previews plus two hosted noindex docs sites, with no trial clock — but it's capped at two languages rather than seven-plus.
Why doesn't Speakeasy publish a self-serve price?
As of this check, its public pricing page positions the product toward enterprise AI/agent governance rather than a per-seat or per-SDK self-serve price. That's a legitimate business decision for that market — it just means budgeting requires a sales conversation.
Can I try both on the same spec before deciding?
Yes, and that's the most reliable way to compare either tool honestly. Run your OpenAPI spec through Sourced's free preview and Speakeasy's free SDK tier and compare the actual generated code — see the fuller Speakeasy alternatives roundup and Speakeasy vs Fern if you're also weighing a third vendor.
Try it yourself
Validate your OpenAPI spec first with the OpenAPI validator, then create hosted docs from your repo or start free with a direct upload — no credit card either way. If you're already on Speakeasy and TypeScript/Python cover your customer base, see the Speakeasy to Sourced migration guide for what changes and what doesn't.