Which is cheaper, Buf or Stainless?

Stainless is 38.0x cheaper than Buf. Buf starts at $0/mo, Stainless starts at $0/mo.

Does Buf have a free tier?

Yes, Buf offers a free tier with privateRepositories: 1.

Buf has moderate switching cost. Stainless has moderate switching cost. Both have similar switching complexity.

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Buf

Protobuf and gRPC tooling platform with schema registry, linting, breaking change detection, and SDK generation

Switching Cost: moderate

Stainless

← More affordable

SDK generation platform that creates idiomatic client libraries and documentation from OpenAPI specs

Switching Cost: moderate

The cost difference is substantial — Buf runs about 38.0x what Stainless charges.

Their pricing models diverge: Buf uses usage-based, while Stainless operates on a hybrid basis.

If budget is your primary constraint, Stainless is the clear winner with its more wallet-friendly pricing structure.

If budget is your primary constraint, Stainless is the clear winner with its more wallet-friendly pricing structure.

Price Difference

38.0x

Stainless is cheaper by $2921/mo

Pricing Model

Different

Tools charge using different pricing philosophies