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deepmind.google·6d ago
AI Engineering
Lobsters·Jun 23·5 min read
Performance of WebAssembly runtimes in 2026
TL;DR
WebAssembly runtimes have been evolving, but it was unclear if their performance was genuinely improving over time. To investigate this, libsodium, a cryptographic library, was benchmarked across WebAssembly runtimes from 2024, 2025, and 2026.
✦ Why It Matters
Engineers can leverage the latest WebAssembly runtimes for improved performance in cryptographic applications.
Key Takeaways
- Benchmark your applications on the latest WebAssembly runtimes.
- Stay updated on WebAssembly performance trends.
- Consider using libsodium for cryptographic needs.
- Evaluate runtime performance improvements regularly.
Full Summary
WebAssembly is a binary instruction format that allows code written in languages like C to run in web browsers at near-native speed. The study focused on benchmarking libsodium, a widely used cryptographic library, across three different WebAssembly runtimes released in June of 2024, 2025, and 2026.
The methodology involved compiling the same C code into WebAssembly and running it on each runtime to assess performance improvements. Results showed that the 2026 runtime outperformed the 2025 and 2024 versions, indicating a consistent trend of performance enhancement over the years.
Specific metrics were not disclosed, but the findings suggest that ongoing development in WebAssembly runtimes is yielding tangible benefits. This is significant for developers relying on WebAssembly for performance-critical applications, as it demonstrates that investing in the latest runtimes can lead to better execution speeds.