# Is wasm32-wasip2 experimental?

**URL:** <https://users.rust-lang.org/t/is-wasm32-wasip2-experimental/126541>\
**Category:** uncategorized\
**Created:** [March 4, 2025, 12:23pm UTC](https://users.rust-lang.org/t/is-wasm32-wasip2-experimental/126541 "2025-03-04T12:23:34Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![crepererum](https://sea1.discourse-cdn.com/flex019/user_avatar/users.rust-lang.org/crepererum/32/1902_2.png) [@crepererum](https://users.rust-lang.org/u/crepererum)\
**Post date:** [March 4, 2025, 12:23pm UTC](https://users.rust-lang.org/t/is-wasm32-wasip2-experimental/126541/1 "2025-03-04T12:23:34Z")

</div>

The rustc book classifies `wasm32-wasip2` as tier 2, but at the same time states ([reference](https://doc.rust-lang.org/nightly/rustc/platform-support/wasm32-wasip2.html)):

> The `wasm32-wasip2` target is a new and still (as of January 2024) an experimental target.

On the other hand, `wasm32-wasip1` is also classified as tier 2, but lacks the "experimental" wording ([reference](https://doc.rust-lang.org/nightly/rustc/platform-support/wasm32-wasip1.html)). Reading the target policy for tier 2 ([reference](https://doc.rust-lang.org/nightly/rustc/target-tier-policy.html#tier-2-target-policy)), it sounds that that tier isn't really "experimental" but a rather usable state.

Reading the following Rust issues, I thing the statement from "January 2024" is somewhat outdated:

- [Rendered Rustc book out of sync: wasm32-wasip2 should be documented as Tier-2 target · Issue #133206 · rust-lang/rust · GitHub](https://github.com/rust-lang/rust/issues/133206)
- [Update release notes for 1.82.0 to include the tier 2 status for the `wasm32-wasip2` target · Issue #129997 · rust-lang/rust · GitHub](https://github.com/rust-lang/rust/issues/129997)
- [Tracking issue for release notes of #129997: Update release notes for 1.82.0 to include the tier 2 status for the `wasm32-wasip2` target · Issue #129998 · rust-lang/rust · GitHub](https://github.com/rust-lang/rust/issues/129998)

So my questions are:

1. Is `wasm32-wasip2` actually experimental?
2. Is `wasm32-wasip2` more unstable/experimental than `wasm32-wasip1`?

---

<div class="post-metadata">

**Author:** ![system](https://sea1.discourse-cdn.com/flex019/user_avatar/users.rust-lang.org/system/32/51372_2.png) [@system](https://users.rust-lang.org/u/system)\
**Post date:** [June 2, 2025, 12:24pm UTC](https://users.rust-lang.org/t/is-wasm32-wasip2-experimental/126541/2 "2025-06-02T12:24:03Z")

</div>

This topic was automatically closed 90 days after the last reply. We invite you to open a new topic if you have further questions or comments.