Data points: 118
Model compare
The readout for GLM-5.2 and GPT-5.1, 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 84 to 16.
Evidence depth
118 data points
Includes 24 benchmark rows, 1 audit samples, and 8 provider examples.
Selection signal
Start with GLM-5.2
The charts below split 33 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-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GLM-5.2 | GPT-5.1 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 84.0 pts | 16.0 pts |
| Benchmark category leads | 6 categories | 0 categories |
| Operational advantages | Cheapest input price | Average speed, First-token latency, Free providers, Provider coverage |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 131.1K tokens | 128K tokens |
| Modalities | Input Text Output Text | Input Image |
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-5.1 |
|---|---|---|
| Developer | Z.ai | OpenAI |
| Released | Jun 2026 | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | z-ai/glm-5.2 | openai/gpt-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for GLM-5.2 and GPT-5.1: 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).
GPT-5.1
GPT-5.1 has these operational advantages: 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-5.2
59.5
Avg. score
GPT-5.1
52
GLM-5.2 leads by 13.0
GLM-5.2 leads by 8.9
GLM-5.2 leads by 2.2
GLM-5.2 leads by 4.4
GLM-5.2 leads by 16.4
No data
No data
GLM-5.2 leads by 0.2
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-5.1
56.0
Rank #47/90 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner$4.40/M
Rank #101/169 · confidence 4
GPT-5.1
$10.00/M
Rank #126/169 · confidence 4
GLM-5.2
winner$2.15/M
Rank #108/169 · confidence 4
GPT-5.1
$3.44/M
Rank #123/169 · confidence 4
GLM-5.2
$1.40/M
Rank #121/169 · confidence 4
GPT-5.1
winner$1.25/M
Rank #110/169 · confidence 4
GLM-5.2
71.3
Rank #15/94 · confidence 2 · eval date 2026-06-16
GPT-5.1
winner75.0
Rank #3/94 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner20.9
Rank #10/77 · confidence 2 · eval date 2026-06-16
GPT-5.1
4.9
Rank #38/77 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner40.1%
Rank #14/193 · confidence 4
GPT-5.1
26.5%
Rank #45/193 · confidence 4
GLM-5.2
winner89.5%
Rank #28/194 · confidence 4
GPT-5.1
87.3%
Rank #36/194 · confidence 4
GLM-5.2
winner68.8
Rank #17/64 · confidence 2 · eval date 2026-06-16
GPT-5.1
49.4
Rank #36/64 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner50.5%
Rank #18/191 · confidence 4
GPT-5.1
43.3%
Rank #46/191 · confidence 4
GLM-5.2
winner50.5
Rank #22/101 · confidence 2 · eval date 2026-06-16
GPT-5.1
43.3
Rank #49/101 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner81.4
Rank #7/57 · confidence 2 · eval date 2026-06-16
GPT-5.1
49.9
Rank #31/57 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner40.1
Rank #13/101 · confidence 2 · eval date 2026-06-16
GPT-5.1
26.5
Rank #43/101 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner51.1
Rank #13/104 · confidence 2 · eval date 2026-06-16
GPT-5.1
36.9
Rank #46/104 · confidence 1 · eval date 2025-11-13
GLM-5.2
4.0
Rank #25/34 · confidence 2 · eval date 2026-06-16
GPT-5.1
winner5.6
Rank #23/34 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner89.5
Rank #29/101 · confidence 2 · eval date 2026-06-16
GPT-5.1
87.3
Rank #39/101 · confidence 1 · eval date 2025-11-13
GLM-5.2
25.1
Rank #62/95 · confidence 2 · eval date 2026-06-16
GPT-5.1
winner37.6
Rank #35/95 · confidence 1 · eval date 2025-11-13
GLM-5.2
28.1
Rank #89/95 · confidence 2 · eval date 2026-06-16
GPT-5.1
winner51.3
Rank #67/95 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner1341.0
Rank #2/69 · confidence 2 · eval date 2026-06-16
GPT-5.1
1212.0
Rank #41/69 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner73.3
Rank #26/86 · confidence 2 · eval date 2026-06-16
GPT-5.1
72.9
Rank #30/86 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner99.1
Rank #1/84 · confidence 2 · eval date 2026-06-16
GPT-5.1
81.9
Rank #54/84 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner50.5
Rank #10/55 · confidence 2 · eval date 2026-06-16
GPT-5.1
24.4
Rank #40/55 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner1510.0
Rank #10/60 · confidence 2 · eval date 2026-06-16
GPT-5.1
988.0
Rank #40/60 · confidence 1 · eval date 2025-11-13
GLM-5.2
winner43.1
Rank #12/60 · confidence 2 · eval date 2026-06-16
GPT-5.1
21.0
Rank #41/60 · confidence 1 · eval date 2025-11-13
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-5.2 | GPT-5.1 |
|---|---|---|
Winner: GLM-5.2 | GLM-5.2 GLM-5.2-C Audit score 75 597863100 | GPT-5.1 gpt-5.1 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-5.2 | GPT-5.1 |
|---|---|---|
10 tests | GLM-5.2 speed / latency 62 tok/s / 8564ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
10 tests | GLM-5.2 speed / latency 24 tok/s / 13024ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | GLM-5.2 speed / latency 52 tok/s / 1437ms input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
5 tests | GLM-5.2 speed / latency 36 tok/s / 9597ms input / output No data | GPT-5.1 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-5.1 speed / latency 96 tok/s / 1862ms input / output No data |
GLM-5.2 glm-5.2 speed / latency No data input / output $0/M/$0/M | GPT-5.1 gpt-5.1 speed / latency No data input / output $0.086/M | |
GLM-5.2 glm-5.2 speed / latency No data input / output $0/request | GPT-5.1 gpt-5.1 speed / latency No data input / output $0/request | |
GLM-5.2 z-ai/glm-5.2 speed / latency No data input / output $0/request | GPT-5.1 gpt-5-1 speed / latency No data input / output $0.040/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 modeReasoning |
|---|
