Opus 5.5 beats local Qwen3.8-Flash-Next on a six-way Rust benchmark

What the research found

Original post of the same six-way benchmark: Opus 5.5 scored higher than locally run Qwen3.8-Flash-Next on a LlamaStash Rust feature, all 12 PRs pass end-to-end tests, and the gap is mainly in edge cases, tests and docs.

Claims and how well the evidence supports them

1. Opus 5.5 xhigh averaged 6.94 of 8 (87%) versus 5.5 for Claude Code plus Flash-Next medium 98%
2. All 12 PRs passed the end-to-end test 99%
3. Flash-Next ran locally at about 4.16 bpw via Halogen on a Strix Halo laptop 97%
4. CI passed on 4 of 4 Claude Code PRs and 1 of 4 Pi PRs 99%

Evidence

• reddit.com https://reddit.com/r/LocalLLaMA/comments/1xatxqk/qwen38flashnext_vs_opus_55_sixway_benchmark_on_a
• deepu.tech https://deepu.tech/qwen3.8-flash-next-vs-claude-opus-showdown
• github.com https://github.com/deepu105/llamastash-b4r2/pulls

Actionability rated low.