Comparing 2 models
Qwen3.8 27B vs GLM 5.3 Flash
Benchmarks through
Verdict
GLM 5.3 Flash places higher on 3 of the 5 tasks where both are ranked. Qwen3.8 27B costs 1.0x less per input token. GLM 5.3 Flash accepts 1.0x more context.
- Choose Qwen3.8 27B for Open-Weight LLM for Self-Hosting (#1), High-Volume Extraction (#2).
- Choose GLM 5.3 Flash for Structured Data Extraction (#4), JSON & Schema Output (#4), Local LLM for Coding (#4).
Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.
Measured head to head
Benchmarks both models were run on
| Evaluation | Qwen3.8 27B | GLM 5.3 Flash | Source |
|---|---|---|---|
| LiveBench Agentic Coding | 61.4% | 56.8% | source · 2026-10-18 |
| LiveBench Coding | 75.7% | 79.0% | source · 2026-10-18 |
| LiveBench Data Analysis | 76.6% | 76.4% | source · 2026-10-18 |
| LiveBench Instruction Following | 72.7% | 52.8% | source · 2026-10-18 |
| LiveBench Language | 74.3% | 77.3% | source · 2026-10-18 |
| LiveBench Math | 86.2% | 81.2% | source · 2026-10-18 |
| LiveBench Reasoning | 80.0% | 77.6% | source · 2026-10-18 |
| LMArena Agent | -3.8 | -1.6 | source · 2026-10-20 |
| LMArena Agent Steerability | -3.9 | -3.4 | source · 2026-10-20 |
| LMArena Agent Task Outcome | -1.5 | 3 | source · 2026-10-20 |
| LMArena Agent Tool Hallucination | -0.1 | 0.7 | source · 2026-10-20 |
| LMArena Creative Writing | 1383 Elo | 1441 Elo | source · 2026-10-20 |
| LMArena Instruction Following | 1436 Elo | 1478 Elo | source · 2026-10-20 |
| LMArena Long Query | 1448 Elo | 1481 Elo | source · 2026-10-20 |
| LMArena Math | 1455 Elo | 1503 Elo | source · 2026-10-20 |
| LMArena Text | 1437 Elo | 1475 Elo | source · 2026-10-20 |
| LMArena Text Factuality | 1437 Elo | 1464 Elo | source · 2026-10-20 |
| LMArena Vision | 1242 Elo | 1271 Elo | source · 2026-10-19 |
| LMArena Vision Diagrams | 1270 Elo | 1306 Elo | source · 2026-10-19 |
| LMArena Vision OCR | 1262 Elo | 1283 Elo | source · 2026-10-19 |
| LMArena WebDev | 1593 Elo | 1607 Elo | source · 2026-10-19 |
| LMArena WebDev Image-to-Web | 1577 Elo | 1578 Elo | source · 2026-10-19 |
Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.
task evidence
How they place when the question changes
Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.