Sway

Sway is a language purpose-built for blockchains. It combines the best of Solidity and Rust, providing a full suite of tools for creating secure, high-performance Dapps. 🧵

Sway community call March'26 x.com/i/broadcasts/1…

I will be going live with @SwayLang community call March edition, in an hour. Stay tuned!

Sway Community Call x.com/i/broadcasts/1…

I will be hosting the very first @SwayLang community call of the year today. See y'all at 9 am EST!

Huge shoutout to the compiler team, tooling team and the community for shaping the Sway into what it is today 🙌

What’s next? These benchmarks are just the beginning. We are prioritizing the compile speed gains in 2026. We’ll soon start surfacing real‑world performance data from Sway projects.

With the release of Sway `v0.70.3`, we’ve shipped major updates and compiler enhancements throughout the year, and performance gains cleanly reflect how far we’ve come as an ecosystem. Let’s look back on our journey over this year.

These enhancements refine the Sway developer experience and tighten the compiler foundation for future releases. Checkout the entire release notes ⤵️ github.com/FuelLabs/sway/…

What’s new? → Patchable registry dependencies → Deterministic IR printing → `forc‑call` ABI backtracing → Introduce `alloc` intrinsic to avoid using `asm`

Sway `v0.70.3` is now live! 🌴 This release brings targeted improvements across the compiler & tooling that enable faster builds.

Taking a deep second breath on @o2dotapp ⛽️ Boosted markets. Referrals on.

Check out the RFC below ⤵️ github.com/FuelLabs/sway-…

New Sway RFC is live 🌴 RFC #45 introduces a unified approach to error handling in Sway with: → Zero-cost defaults on-chain → Clear, debuggable errors off-chain → Consistent patterns across contracts & libraries `panic` is now the standard for invariants, with optional typed errors for richer DX

x402 is live on @fuel_network 🚀 Clients (AI agents) can now pay for premium API content directly from their Fuel wallet. Pay per request, no API keys or subscriptions. video 👇

Building a CLOB on Ethereum: 10,000+ lines of Solidity, complex state management, gas optimization hell. Building a CLOB on Fuel: ~200 lines of Sway, native parallelism, optimal execution. Architecture matters.

Check it out and join the discussion 👇 github.com/FuelLabs/sway-…

New RFC for Sway is out. It introduces the fuzzing feature to the Sway toolchain. New RFC for Sway introducing fuzzing to the Sway toolchain is live! Fuzzing = automated input generation to explore smart contract edge cases.