Compare / head-to-head
GLM-5.1vsQwen3.8-Max
Qwen3.8-Max leads 5 of 5 shared benchmarks. GLM-5.1 is 1.1x cheaper per token. Qwen3.8-Max has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 5
Qwen3.8-Max leads
Cheaper per token
GLM-5.1
1.1x cheaper, input + output
Larger context
Qwen3.8-Max
1M tokens
Provider uptime (30d)
— · —
Z.ai · Qwen
GLM-5.1
Z.ai · released 2026-04-07
text
Qwen3.8-Max
Qwen · released 2026-08-02
textvision
Quality
Benchmark matrix
5 shared · 2 only GLM-5.1 · 3 only Qwen3.8-Max| Benchmark | GLM-5.1 | Qwen3.8-Max | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 5 | ||||
| GPQA Diamond | 89.9% ↗epoch | 92.6% ↗ | -2.7 pt | Qwen3.8-Max |
| LMArena Elo | 1462.4 ↗ | 1480.6 ↗ | -18.2 | Qwen3.8-Max |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 36.8% ↗epoch | 74.7% ↗epoch | -37.9 pt | Qwen3.8-Max |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 93.3% ↗epoch | 99.4% ↗epoch | -6.1 pt | Qwen3.8-Max |
| SimpleQA Verified | 34% ↗epoch | 45.8% ↗epoch | -11.8 pt | Qwen3.8-Max |
| Only GLM-5.1 reports · 2 | ||||
| AIME 2026 | 95.8% ↗matharena ⚠ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 74.2% ↗epoch | not reported | — | — |
| Only Qwen3.8-Max reports · 3 | ||||
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 46.3% ↗epoch | — | — |
| SWE-Bench Pro | not reported | 67.7% ↗ | — | — |
| Terminal-Bench 2.1 | not reported | 86.6% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GLM-5.1 minus Qwen3.8-Max in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GLM-5.1 | Qwen3.8-Max | Edge |
|---|---|---|---|
| Context window | 200K tokens | 1M tokens | Qwen3.8-Max |
| Max output | 131K tokens | 131K tokens | Tie |
| Input price / 1M | $1.4 ↗ | $1.65 ↗ | GLM-5.1 |
| Output price / 1M | $4.4 ↗ | $4.95 ↗ | GLM-5.1 |
| Cached input / 1M | $0.26 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $5.8 | $6.6 | GLM-5.1 |
| Modalities | text | text · vision | Qwen3.8-Max |
| Released | 2026-04-07 | 2026-08-02 | — |
| Cited benchmark scores | 7 | 9 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GLM-5.1 vs …
Models sharing the most benchmarksMore matchups
Qwen3.8-Max vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GLM-5.1 and Qwen3.8-Max on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.