Data points: 107
Model compare
The readout for GLM-4.5 Air and GPT-5, before the detailed comparison sheet.
Weighted outcome: GPT-5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5
GPT-5 has the higher weighted result; Model A / B score 0 to 100.
Evidence depth
107 data points
Includes 20 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GPT-5
The charts below split 29 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
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.
| Model compare | GLM-4.5 Air | GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 0.0 pts | 100.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage |
| Context window | 131.1K tokens | 400K tokens |
| Max output | 98.3K tokens | 128K tokens |
| Modalities | Input Text Output Text | Input Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | GLM-4.5 Air | GPT-5 |
|---|---|---|
| Developer | Z.ai | OpenAI |
| Released | Jul 2025 | Aug 2025 |
| 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 |
| References | No data | No data |
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.
GLM-4.5 Air
GLM-4.5 Air does not clearly lead in the benchmark or operational dimensions shared by both models.
GPT-5
GPT-5 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage).
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
GLM-4.5 Air
45.9
Avg. score
GPT-5
51.9
GPT-5 leads by 2.6
GPT-5 leads by 0.7
GPT-5 leads by 4.3
GPT-5 leads by 13.3
GPT-5 leads by 4.6
No data
No data
GPT-5 leads by 10.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GLM-4.5 Air
winner$0.170/M
Rank #23/162 · confidence 4
GPT-5
$1.25/M
Rank #107/162 · confidence 4
GLM-4.5 Air
winner$0.372/M
Rank #31/162 · confidence 4
GPT-5
$3.44/M
Rank #117/162 · confidence 4
GLM-4.5 Air
winner$0.980/M
Rank #39/162 · confidence 4
GPT-5
$10.00/M
Rank #120/162 · confidence 4
GLM-4.5 Air
43.7
Rank #74/89 · confidence 1 · eval date 2025-06-01
GPT-5
winner75.6
Rank #2/89 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
winner81.5%
Rank #53/125 · confidence 4
GPT-5
80.6%
Rank #57/125 · confidence 4
GLM-4.5 Air
winner73.3%
Rank #106/188 · confidence 4
GPT-5
67.3%
Rank #121/188 · confidence 4
GLM-4.5 Air
winner6.8%
Rank #116/187 · confidence 4
GPT-5
5.4%
Rank #132/187 · confidence 4
GLM-4.5 Air
winner68.4%
Rank #32/115 · confidence 4
GPT-5
55.8%
Rank #49/115 · confidence 4
GLM-4.5 Air
30.6
Rank #85/96 · confidence 1 · eval date 2025-06-01
GPT-5
winner42.9
Rank #46/96 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
30.6%
Rank #136/185 · confidence 4
GPT-5
winner38.8%
Rank #83/185 · confidence 4
GLM-4.5 Air
winner96.5%
Rank #16/74 · confidence 4
GPT-5
86.1%
Rank #42/74 · confidence 4
GLM-4.5 Air
winner67.3%
Rank #23/68 · confidence 4
GPT-5
36.7%
Rank #35/68 · confidence 4
GLM-4.5 Air
winner92.3
Rank #7/90 · confidence 1 · eval date 2025-06-01
GPT-5
82.1
Rank #31/90 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
15.5
Rank #82/90 · confidence 1 · eval date 2025-06-01
GPT-5
winner40.7
Rank #20/90 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
6.8
Rank #75/96 · confidence 1 · eval date 2025-06-01
GPT-5
winner26.5
Rank #39/96 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
73.3
Rank #74/96 · confidence 1 · eval date 2025-06-01
GPT-5
winner85.4
Rank #45/96 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
16.5
Rank #80/99 · confidence 1 · eval date 2025-06-01
GPT-5
winner34.7
Rank #48/99 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
1176.0
Rank #48/66 · confidence 1 · eval date 2025-06-01
GPT-5
winner1214.0
Rank #40/66 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
37.6
Rank #77/86 · confidence 1 · eval date 2025-06-01
GPT-5
winner73.1
Rank #29/86 · confidence 1 · eval date 2025-08-07
GLM-4.5 Air
46.5
Rank #69/84 · confidence 1 · eval date 2025-06-01
GPT-5
winner84.8
Rank #44/84 · confidence 1 · eval date 2025-08-07
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 speed / latency 95 tok/s / 1234ms input / output No data |
10 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 |
10 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 |
5 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 |
5 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 $0.014/M/$0.075/M | GPT-5 gpt-5 speed / latency No data input / output $0.086/M | |
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0/request | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0/request | |
GLM-4.5 Air zai-org/GLM-4.5-Air speed / latency No data input / output $0.025/M/$0.140/M | GPT-5 gpt-5 speed / latency No data input / output $2.14/M | |
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0.033/M/$0.247/M | GPT-5 gpt-5-chat-latest speed / latency No data input / output $0.856/M |
Weighted outcome: GPT-5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
