Data points: 83
The readout for GLM-4.5 Air and GPT-5, before the detailed comparison sheet.
Decision read
GPT-5
GPT-5 currently has the stronger profile, with verified wins split 2 to 4.
Evidence depth
83 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare GLM-4.5 Air vs GPT-5glm-4-5-air-vs-gpt-5 | Model A GLM-4.5 Air | Model B GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 4 wins |
| Where it leads | Free providers, Recent tests | Cheapest input price, Average speed, First-token latency, Provider coverage |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-4.5 Air | GPT-5 |
|---|---|---|
| AIME | 67.3%#20 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-4.5 Air | GPT-5 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-4.5 Air | GPT-5 |
|---|---|---|
20 tests | GLM-4.5 Air speed / latency N/A / N/A input / output No data | GPT-5 |
This report only uses LMSpeed data for GLM-4.5 Air and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-4.5 Air | GPT-5 |
|---|---|---|
| When to choose each model | GLM-4.5 Air GLM-4.5 Air is stronger when you prioritize Free providers, Recent tests. | GPT-5 GPT-5 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Provider coverage. |
TL;DR: GPT-5 leads across 83 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-4.5 Air vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GLM-4.5 Air exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. | GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Zhipu AI | OpenAI |
| Context window | 131.1K tokens | 128K tokens |
| Max output | 131.1K tokens | 16.4K tokens |
| Released | Jul 2025 | Aug 2025 |
| Modalities | Input Text Output Text | Input FileImageText Output Text |
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | 2024-12-31 | 2024-09-30 |
| OpenRouter ID | z-ai/glm-4.5-air | openai/gpt-5-chat |
| References | No data | No data |
| MATH-500 | 96.5%#18 | 99.4%#1 |
|---|
| MMLU-Pro | 81.5%#33 | 87.1%#7 |
|---|
| Input price | $0.170/M#10 | $1.25/M#30 |
|---|
| LiveCodeBench | 68.4%#33 | 84.6%#11 |
|---|
| Output price | $0.980/M#16 | $10.00/M#41 |
|---|
| Blended price | $0.372/M#20 | $3.44/M#58 |
|---|
| HLE | 6.8%#79 | 26.5%#24 |
|---|
speed / latency
95 tok/s / 1234ms
input / output
No data
OpenRouter10 tests | GLM-4.5 Air speed / latency 20 tok/s / 33054ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
素墨API10 tests | GLM-4.5 Air speed / latency 27 tok/s / 39365ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
|---|
EasyMore5 tests | GLM-4.5 Air speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
|---|
N1N5 tests | GLM-4.5 Air speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 102 tok/s / 948ms input / output No data |
|---|
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0.010/M / $0.010/M | GPT-5 gpt-5 speed / latency No data input / output $1.35/M / $10.80/M |
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0.014/M / $0.075/M | GPT-5 gpt-5 speed / latency No data input / output $0.086/M / $0.685/M |
GLM-4.5 Air zai-org/GLM-4.5-Air speed / latency No data input / output $0.019/M / $0.118/M | GPT-5 gpt-5 speed / latency No data input / output $0.171/M / $1.37/M |
GLM-4.5 Air zai-org/GLM-4.5-Air speed / latency No data input / output $1.03/M / $1.03/M | GPT-5 gpt-5-2025-08-07 speed / latency No data input / output $0.034/M / $0.274/M |
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0.037/M / $0.037/M | GPT-5 gpt-5-chat speed / latency No data input / output $0.037/M / $0.300/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
