Data points: 100
Model compare
The readout for GLM-5.2 and GPT-4o, before the detailed comparison sheet.
Weighted outcome: GLM-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GLM-5.2
GLM-5.2 has the higher weighted result; Model A / B score 88 to 12.
Evidence depth
100 data points
Includes 17 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GLM-5.2
The charts below split 25 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-5.2 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GLM-5.2 | GPT-4o |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 88.0 pts | 12.0 pts |
| Benchmark category leads | 6 categories | 0 categories |
| Operational advantages | Cheapest input price, Provider coverage | Average speed, First-token latency, Free providers |
| Context window | 1.0M tokens | 128K tokens |
| Max output | 131.1K tokens | 16.4K 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-5.2 | GPT-4o |
|---|---|---|
| Developer | Z.ai | OpenAI |
| Released | Jun 2026 | Nov 2024 |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | z-ai/glm-5.2 | openai/gpt-4o |
| References | No data | No data |
This report only uses LMSpeed data for GLM-5.2 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GLM-5.2
GLM-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Provider coverage).
GPT-4o
GPT-4o has these operational advantages: Average speed, First-token latency, Free providers.
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-5.2
59.5
Avg. score
GPT-4o
43.2
GLM-5.2 leads by 21.9
GLM-5.2 leads by 11.8
GLM-5.2 leads by 14.4
GLM-5.2 leads by 8.6
GLM-5.2 leads by 28.2
No data
No data
GLM-5.2 leads by 12.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GLM-5.2
winner71.0
Rank #14/90 · confidence 2 · eval date 2026-06-16
GPT-4o
43.0
Rank #82/90 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner$4.40/M
Rank #101/169 · confidence 4
GPT-4o
$10.00/M
Rank #126/169 · confidence 4
GLM-5.2
winner$2.15/M
Rank #108/169 · confidence 4
GPT-4o
$4.38/M
Rank #133/169 · confidence 4
GLM-5.2
winner$1.40/M
Rank #121/169 · confidence 4
GPT-4o
$2.50/M
Rank #137/169 · confidence 4
GLM-5.2
winner40.1%
Rank #14/193 · confidence 4
GPT-4o
3.3%
Rank #186/193 · confidence 4
GLM-5.2
winner89.5%
Rank #28/194 · confidence 4
GPT-4o
54.3%
Rank #162/194 · confidence 4
GLM-5.2
winner50.5%
Rank #18/191 · confidence 4
GPT-4o
33.3%
Rank #126/191 · confidence 4
GLM-5.2
winner50.5
Rank #22/101 · confidence 2 · eval date 2026-06-16
GPT-4o
33.3
Rank #85/101 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner81.4
Rank #7/57 · confidence 2 · eval date 2026-06-16
GPT-4o
25.4
Rank #55/57 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner40.1
Rank #13/101 · confidence 2 · eval date 2026-06-16
GPT-4o
3.3
Rank #99/101 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner51.1
Rank #13/104 · confidence 2 · eval date 2026-06-16
GPT-4o
11.2
Rank #95/104 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner89.5
Rank #29/101 · confidence 2 · eval date 2026-06-16
GPT-4o
54.3
Rank #96/101 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner25.1
Rank #62/95 · confidence 2 · eval date 2026-06-16
GPT-4o
19.7
Rank #80/95 · confidence 1 · eval date 2024-05-13
GLM-5.2
28.1
Rank #89/95 · confidence 2 · eval date 2026-06-16
GPT-4o
winner37.9
Rank #79/95 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner1341.0
Rank #2/69 · confidence 2 · eval date 2026-06-16
GPT-4o
856.0
Rank #68/69 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner73.3
Rank #26/86 · confidence 2 · eval date 2026-06-16
GPT-4o
34.3
Rank #82/86 · confidence 1 · eval date 2024-05-13
GLM-5.2
winner99.1
Rank #1/84 · confidence 2 · eval date 2026-06-16
GPT-4o
25.1
Rank #75/84 · confidence 1 · eval date 2024-05-13
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-5.2 | GPT-4o |
|---|---|---|
| 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-5.2 | GPT-4o |
|---|---|---|
20 tests | GLM-5.2 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data |
10 tests | GLM-5.2 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 57 tok/s / 3381ms input / output No data |
10 tests | GLM-5.2 speed / latency 24 tok/s / 13024ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
5 tests | GLM-5.2 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data |
5 tests | GLM-5.2 speed / latency 36 tok/s / 9597ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
GLM-5.2 glm-5.2 speed / latency No data input / output $0/M/$0/M | GPT-4o gpt-4o speed / latency No data input / output $0/M | |
GLM-5.2 glm-5.2 speed / latency No data input / output $0/M/$0/M | GPT-4o gpt-4o speed / latency No data input / output $0.171/M | |
GLM-5.2 glm-5.2 speed / latency No data input / output $0/request | GPT-4o gpt-4o-2024-05-13 speed / latency No data input / output $0/request |
Weighted outcome: GLM-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search |
|---|
