Canonical Wago documentation
Wago compared with Wasmtime
A scoped, source-linked comparison of Wago and Wasmtime, including when to choose either runtime and what has not been benchmarked.
Short answer
Choose Wago when a pure-Go, no-cgo embedding path and low single-pass compile overhead are primary constraints.
Choose Wasmtime when you need the Component Model ecosystem, fuel accounting, epoch interruption, broad WASI support, or Wasmtime’s security and release processes.
Operational differences
| Area | Wago | Wasmtime |
|---|---|---|
| Implementation | Go; no cgo | See the project’s current implementation and bindings |
| Execution terminology | Single-pass native compiler | Cranelift optimizing compiler, available at runtime and ahead of time |
| Wago release maturity | Pre-v1 development/nightly channels; no stable v1 API promise | See the other project’s release and support policy |
| Known Wago gap | Wago has no published Component Model support, deterministic fuel system, third-party security audit, or Wasmtime-scale WASI surface. | Not applicable |
Benchmark scope
Wago publishes whole-process startup rows that include Wasmtime, but does not publish the same detailed stage-by-stage comparison used for wazero.
No result on this page should be treated as universal. Use identical versions, hardware, Wasm modules, warmup, and measurement boundaries.
Raw Wago data: project.json. Other-runtime primary source: https://github.com/bytecodealliance/wasmtime.
Verification date
Wago facts: 2026-07-30, pinned to 7d8c58aa454a. Competitor descriptions last reviewed against the linked primary project source on 2026-07-29.