Compare / head-to-head
Gemini 2.5 FlashvsGLM-4.5-Air
Gemini 2.5 Flash and GLM-4.5-Air split their 2 shared benchmarks evenly. GLM-4.5-Air is 2.2x cheaper per token. Gemini 2.5 Flash has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 1
even split
Cheaper per token
GLM-4.5-Air
2.2x cheaper, input + output
Larger context
Gemini 2.5 Flash
1.0M tokens
Provider uptime (30d)
100% · —
Google · Z.ai
Gemini 2.5 Flash
Google · released 2025-06-17
textvisionaudio
GLM-4.5-Air
Z.ai
text
Quality
Benchmark matrix
2 shared · 6 only Gemini 2.5 Flash · 0 only GLM-4.5-Air| Benchmark | Gemini 2.5 Flash | GLM-4.5-Air | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| AIME 2025 | 72% ↗ | 83.3% ↗matharena ⚠ | -11.3 pt | GLM-4.5-Air |
| LMArena Elo | 1417.3 ↗ | 1383.6 ↗ | +33.7 | Gemini 2.5 Flash |
| Only Gemini 2.5 Flash reports · 6 | ||||
| SWE-bench Verified | 48.9% ↗ | not reported | — | — |
| GPQA Diamond | 82.8% ↗ | not reported | — | — |
| Humanity's Last Exam (no tools) | 11% ↗ | not reported | — | — |
| Aider Polyglot | 56.7% ↗ | not reported | — | — |
| LiveCodeBench | 59.3% ↗ | not reported | — | — |
| MMMU | 79.7% ↗ | not reported | — | — |
| Only GLM-4.5-Air reports · 0 | ||||
| GLM-4.5-Air reports nothing Gemini 2.5 Flash does not. | ||||
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 Gemini 2.5 Flash minus GLM-4.5-Air 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 | Gemini 2.5 Flash | GLM-4.5-Air | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 128K tokens | Gemini 2.5 Flash |
| Max output | 66K tokens | 98K tokens | GLM-4.5-Air |
| Input price / 1M | $0.3 ↗ | $0.2 ↗ | GLM-4.5-Air |
| Output price / 1M | $2.5 ↗ | $1.1 ↗ | GLM-4.5-Air |
| Cached input / 1M | $0.03 ↗ | $0.03 ↗ | Tie |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $2.8 | $1.3 | GLM-4.5-Air |
| Modalities | text · vision · audio | text | Gemini 2.5 Flash |
| Released | 2025-06-17 | — | — |
| Cited benchmark scores | 9 | 2 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Gemini 2.5 Flash vs …
Models sharing the most benchmarksMore matchups
GLM-4.5-Air vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 2.5 Flash and GLM-4.5-Air on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.