Local 27B vs Cloud API: 89.5 vs 92.6 Quality, Fully Green Coding Runs
Icy-Stay-1004 · reddit · 2026-10-07
A Reddit user ran a paired benchmark of local Qwen 3.8 27B against the DeepSeek Flash API: 25 paired tasks, identical prompts, one independent judge.
- Quality: 89.5 vs 92.6 on a 100-point scale; the 12-task suite split 6-6.
- Coding: all runs green on both — 10/10 agentic runs fully passing (20 visible + 4 hidden tests), and the bug-fix loop fixed all 4 bugs 5/5 rounds each.
- Speed: local was 2.5–5.5× slower in wall clock, with 95%+ of time in model generation.
- Cost: local cost nothing beyond electricity; the cloud suite cost 0.14 credits.
Verdict: this generation, the privacy-vs-quality tax has narrowed — local is good enough for daily work, just slower.
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