Data points: 133
Model compare
The readout for GLM-4.7 and GLM-5.1, before the detailed comparison sheet.
Weighted outcome: GLM-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GLM-5.1
GLM-5.1 has the higher weighted result; Model A / B score 17.3 to 82.7.
Evidence depth
133 data points
Includes 31 benchmark rows, 1 audit samples, and 9 provider examples.
Selection signal
Start with GLM-5.1
The charts below split 41 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-4.7 and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GLM-4.7 | GLM-5.1 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 17.3 pts | 82.7 pts |
| Benchmark category leads | 1 categories | 5 categories |
| Operational advantages | Average speed | Cheapest input price, First-token latency, Free providers, Provider coverage |
| Context window | 204.8K tokens | 204.8K tokens |
| Max output | 131.1K 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-4.7 | GLM-5.1 |
|---|---|---|
| Developer | Z.ai | Z.ai |
| Released | Dec 2025 | Apr 2026 |
| Parameters | No data | No data |
| Tokenizer | Other | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | z-ai/glm-4.7 | z-ai/glm-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for GLM-4.7 and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GLM-4.7
GLM-4.7 is stronger in benchmark categories (Reasoning) and operational dimensions (Average speed).
GLM-5.1
GLM-5.1 is stronger in benchmark categories (Agents, Coding, Knowledge, Math, Instruction following) and operational dimensions (Cheapest input price, 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-4.7
48.8
Avg. score
GLM-5.1
54.4
GLM-5.1 leads by 6.6
GLM-5.1 leads by 1.2
GLM-4.7 leads by 0.7
GLM-5.1 leads by 20.4
GLM-5.1 leads by 2.9
No data
No data
GLM-5.1 leads by 3.2
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GLM-4.7
39.0
Rank #82/84 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner63.0
Rank #25/84 · confidence 2 · eval date 2026-04-07
GLM-4.7
winner$2.20/M
Rank #68/162 · confidence 4
GLM-5.1
$4.40/M
Rank #97/162 · confidence 4
GLM-4.7
winner$1.00/M
Rank #75/162 · confidence 4
GLM-5.1
$2.13/M
Rank #103/162 · confidence 4
GLM-4.7
winner$0.600/M
Rank #80/162 · confidence 4
GLM-5.1
$1.38/M
Rank #116/162 · confidence 4
GLM-4.7
66.4%
Rank #127/188 · confidence 4
GLM-5.1
winner86.8%
Rank #35/188 · confidence 4
GLM-4.7
6.1%
Rank #127/187 · confidence 4
GLM-5.1
winner28.0%
Rank #35/187 · confidence 4
GLM-4.7
1.7
Rank #48/73 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner4.6
Rank #37/73 · confidence 2 · eval date 2026-04-07
GLM-4.7
winner64.0
Rank #49/89 · confidence 2 · eval date 2025-10-01
GLM-5.1
62.3
Rank #55/89 · confidence 2 · eval date 2026-04-07
GLM-4.7
58.7
Rank #7/11 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner62.7
Rank #3/11 · confidence 2 · eval date 2026-04-07
GLM-4.7
52.2
Rank #34/65 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner62.7
Rank #12/65 · confidence 2 · eval date 2026-04-07
GLM-4.7
45.3
Rank #37/59 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner55.8
Rank #27/59 · confidence 2 · eval date 2026-04-07
GLM-4.7
35.4%
Rank #110/185 · confidence 4
GLM-5.1
winner43.8%
Rank #39/185 · confidence 4
GLM-4.7
winner45.1
Rank #40/96 · confidence 2 · eval date 2025-10-01
GLM-5.1
43.8
Rank #42/96 · confidence 2 · eval date 2026-04-07
GLM-4.7
2.4
Rank #42/47 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner33.4
Rank #17/47 · confidence 2 · eval date 2026-04-07
GLM-4.7
26.1
Rank #51/56 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner64.6
Rank #18/56 · confidence 2 · eval date 2026-04-07
GLM-4.7
winner90.3
Rank #10/90 · confidence 2 · eval date 2025-10-01
GLM-5.1
29.4
Rank #83/90 · confidence 2 · eval date 2026-04-07
GLM-4.7
33.2
Rank #54/55 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner77.6
Rank #15/55 · confidence 2 · eval date 2026-04-07
GLM-4.7
33.7
Rank #52/99 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner40.2
Rank #28/99 · confidence 2 · eval date 2026-04-07
GLM-4.7
25.1
Rank #44/96 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner28.0
Rank #35/96 · confidence 2 · eval date 2026-04-07
GLM-4.7
85.9
Rank #42/96 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner86.8
Rank #38/96 · confidence 2 · eval date 2026-04-07
GLM-4.7
winner29.3
Rank #44/90 · confidence 2 · eval date 2025-10-01
GLM-5.1
24.2
Rank #62/90 · confidence 2 · eval date 2026-04-07
GLM-4.7
1251.0
Rank #31/66 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner1299.0
Rank #14/66 · confidence 2 · eval date 2026-04-07
GLM-4.7
67.9
Rank #44/86 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner76.3
Rank #13/86 · confidence 2 · eval date 2026-04-07
GLM-4.7
95.9
Rank #11/84 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner97.7
Rank #7/84 · confidence 2 · eval date 2026-04-07
GLM-4.7
40.0
Rank #37/50 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner60.1
Rank #12/50 · confidence 2 · eval date 2026-04-07
GLM-4.7
52.0
Rank #25/25 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner68.0
Rank #18/25 · confidence 2 · eval date 2026-04-07
GLM-4.7
33.3
Rank #25/50 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner37.8
Rank #18/50 · confidence 2 · eval date 2026-04-07
GLM-4.7
1166.0
Rank #25/55 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner1256.0
Rank #18/55 · confidence 2 · eval date 2026-04-07
GLM-4.7
25.4
Rank #30/55 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner29.9
Rank #22/55 · confidence 2 · eval date 2026-04-07
GLM-4.7
41.0
Rank #44/46 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner63.5
Rank #24/46 · confidence 2 · eval date 2026-04-07
GLM-4.7
11.7
Rank #53/53 · confidence 2 · eval date 2025-10-01
GLM-5.1
winner48.9
Rank #34/53 · confidence 2 · eval date 2026-04-07
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-4.7 | GLM-5.1 |
|---|---|---|
Winner: GLM-5.1 | GLM-4.7 glm-4.7 No audit yet | GLM-5.1 glm-5.1 Audit score 97 10010086100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-4.7 | GLM-5.1 |
|---|---|---|
75 tests | GLM-4.7 speed / latency 42 tok/s / 24443ms input / output No data | GLM-5.1 speed / latency 35 tok/s / 17508ms input / output No data |
59 tests | GLM-4.7 speed / latency 39 tok/s / 28124ms input / output No data | GLM-5.1 speed / latency 35 tok/s / 22863ms input / output No data |
45 tests | GLM-4.7 speed / latency 64 tok/s / 16663ms input / output No data | GLM-5.1 speed / latency 50 tok/s / 9040ms input / output No data |
15 tests | GLM-4.7 speed / latency 134 tok/s / 1161ms input / output No data | GLM-5.1 speed / latency N/A / N/A input / output No data |
15 tests | GLM-4.7 speed / latency N/A / N/A input / output No data | GLM-5.1 speed / latency 62 tok/s / 25980ms input / output No data |
GLM-4.7 glm-4.7 speed / latency No data input / output $0/M/$0/M | GLM-5.1 glm-5.1 speed / latency No data input / output $0/M | |
GLM-4.7 glm-4.7 speed / latency No data input / output $0/M/$0/M | GLM-5.1 glm-5.1 speed / latency No data input / output $0.096/M | |
GLM-4.7 glm-4.7 speed / latency No data input / output $0.010/request | GLM-5.1 glm-5.1 speed / latency No data input / output $0.010/request | |
GLM-4.7 glm-4.7 speed / latency No data input / output $0.035/M/$0.139/M | GLM-5.1 glm-5.1 speed / latency No data input / output $0.122/M |
Weighted outcome: GLM-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
