Compare / head-to-head
GLM-4.5-AirvsSolar Pro 4
GLM-4.5-Air leads 1 of 1 shared benchmark. GLM-4.5-Air is 1.2x cheaper per token. Solar Pro 4 has the larger context window (512K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 0
GLM-4.5-Air leads
Cheaper per token
GLM-4.5-Air
1.2x cheaper, input + output
Larger context
Solar Pro 4
512K tokens
Provider uptime (30d)
— · —
Z.ai · Upstage
GLM-4.5-Air
Z.ai
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Solar Pro 4
Upstage · released 2026-08-20
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Quality
Benchmark matrix
1 shared · 1 only GLM-4.5-Air · 1 only Solar Pro 4| Benchmark | GLM-4.5-Air | Solar Pro 4 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| LMArena Elo | 1383.6 ↗ | 1377.3 ↗ | +6.3 | GLM-4.5-Air |
| Only GLM-4.5-Air reports · 1 | ||||
| AIME 2025 | 83.3% ↗matharena ⚠ | not reported | — | — |
| Only Solar Pro 4 reports · 1 | ||||
| Artificial Analysis Intelligence Index | not reported | 42 ↗ | — | — |
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-4.5-Air minus Solar Pro 4 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-4.5-Air | Solar Pro 4 | Edge |
|---|---|---|---|
| Context window | 128K tokens | 512K tokens | Solar Pro 4 |
| Max output | 98K tokens | — | — |
| Input price / 1M | $0.2 ↗ | $0.3 ↗ | GLM-4.5-Air |
| Output price / 1M | $1.1 ↗ | $1.2 ↗ | GLM-4.5-Air |
| Cached input / 1M | $0.03 ↗ | $0.06 ↗ | GLM-4.5-Air |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $1.3 | $1.5 | GLM-4.5-Air |
| Modalities | text | text | Tie |
| Released | — | 2026-08-20 | — |
| Cited benchmark scores | 2 | 2 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GLM-4.5-Air vs …
Models sharing the most benchmarksMore matchups
Solar Pro 4 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run GLM-4.5-Air and Solar Pro 4 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.