Data points: 149
Model compare
The readout for GLM-5 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 0 to 100.
Evidence depth
149 data points
Includes 39 benchmark rows, 1 audit samples, and 9 provider examples.
Selection signal
Start with GLM-5.1
The charts below split 49 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 and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GLM-5 | GLM-5.1 |
|---|---|---|
| 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 | 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-5 | GLM-5.1 |
|---|---|---|
| Developer | Z.ai | Z.ai |
| Released | Feb 2026 | Apr 2026 |
| Parameters | No data | No data |
| Tokenizer | Other | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | z-ai/glm-5 | z-ai/glm-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for GLM-5 and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GLM-5
GLM-5 does not clearly lead in the benchmark or operational dimensions shared by both models.
GLM-5.1
GLM-5.1 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-5
47.8
Avg. score
GLM-5.1
54.4
GLM-5.1 leads by 11.5
GLM-5.1 leads by 3.0
GLM-5.1 leads by 4.8
GLM-5.1 leads by 13.1
GLM-5.1 leads by 0.6
GLM-5
No data
GLM-5.1 leads by 2.7
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GLM-5
63.0
Rank #25/84 · confidence 4 · eval date 2026-03-01
GLM-5.1
63.0
Rank #25/84 · confidence 2 · eval date 2026-04-07
GLM-5
winner$3.20/M
Rank #89/162 · confidence 4
GLM-5.1
$4.40/M
Rank #97/162 · confidence 4
GLM-5
winner$1.55/M
Rank #93/162 · confidence 4
GLM-5.1
$2.13/M
Rank #103/162 · confidence 4
GLM-5
winner$1.00/M
Rank #98/162 · confidence 4
GLM-5.1
$1.38/M
Rank #116/162 · confidence 4
GLM-5
82.0%
Rank #67/188 · confidence 4
GLM-5.1
winner86.8%
Rank #35/188 · confidence 4
GLM-5
27.2%
Rank #38/187 · confidence 4
GLM-5.1
winner28.0%
Rank #35/187 · confidence 4
GLM-5
2.0
Rank #46/73 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner4.6
Rank #37/73 · confidence 2 · eval date 2026-04-07
GLM-5
winner63.3
Rank #52/89 · confidence 4 · eval date 2026-03-01
GLM-5.1
62.3
Rank #55/89 · confidence 2 · eval date 2026-04-07
GLM-5
winner62.8
Rank #2/11 · confidence 4 · eval date 2026-03-01
GLM-5.1
62.7
Rank #3/11 · confidence 2 · eval date 2026-04-07
GLM-5
59.4
Rank #16/65 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner62.7
Rank #12/65 · confidence 2 · eval date 2026-04-07
GLM-5
55.1
Rank #27/37 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner58.4
Rank #14/37 · confidence 2 · eval date 2026-04-07
GLM-5
23.4
Rank #19/33 · confidence 1 · eval date 2026-03-01
GLM-5.1
winner31.5
Rank #14/33 · confidence 2 · eval date 2026-04-07
GLM-5
winner46.2%
Rank #32/185 · confidence 4
GLM-5.1
43.8%
Rank #39/185 · confidence 4
GLM-5
winner46.2
Rank #36/96 · confidence 4 · eval date 2026-03-01
GLM-5.1
43.8
Rank #42/96 · confidence 2 · eval date 2026-04-07
GLM-5
winner96.9
Rank #1/9 · confidence 4 · eval date 2026-03-01
GLM-5.1
94.0
Rank #4/9 · confidence 2 · eval date 2026-04-07
GLM-5
winner95.8
Rank #3/10 · confidence 4 · eval date 2026-03-01
GLM-5.1
95.3
Rank #5/10 · confidence 2 · eval date 2026-04-07
GLM-5
82.5
Rank #6/10 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner83.8
Rank #4/10 · confidence 2 · eval date 2026-04-07
GLM-5
winner86.4
Rank #10/14 · confidence 4 · eval date 2026-03-01
GLM-5.1
82.6
Rank #14/14 · confidence 2 · eval date 2026-04-07
GLM-5
2.1
Rank #30/35 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner12.5
Rank #16/35 · confidence 2 · eval date 2026-04-07
GLM-5
16.4
Rank #31/47 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner33.4
Rank #17/47 · confidence 2 · eval date 2026-04-07
GLM-5
57.2
Rank #25/56 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner64.6
Rank #18/56 · confidence 2 · eval date 2026-04-07
GLM-5
winner77.9
Rank #14/55 · confidence 4 · eval date 2026-03-01
GLM-5.1
77.6
Rank #15/55 · confidence 2 · eval date 2026-04-07
GLM-5
86.0
Rank #23/24 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner86.2
Rank #22/24 · confidence 2 · eval date 2026-04-07
GLM-5
winner2.0
Rank #26/29 · confidence 4 · eval date 2026-03-01
GLM-5.1
1.9
Rank #27/29 · confidence 2 · eval date 2026-04-07
GLM-5
39.5
Rank #34/99 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner40.2
Rank #28/99 · confidence 2 · eval date 2026-04-07
GLM-5
27.2
Rank #37/96 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner28.0
Rank #35/96 · confidence 2 · eval date 2026-04-07
GLM-5
82.0
Rank #56/96 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner86.8
Rank #38/96 · confidence 2 · eval date 2026-04-07
GLM-5
winner26.9
Rank #48/90 · confidence 4 · eval date 2026-03-01
GLM-5.1
24.2
Rank #62/90 · confidence 2 · eval date 2026-04-07
GLM-5
winner34.0
Rank #80/90 · confidence 4 · eval date 2026-03-01
GLM-5.1
29.4
Rank #83/90 · confidence 2 · eval date 2026-04-07
GLM-5
1274.0
Rank #23/66 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner1299.0
Rank #14/66 · confidence 2 · eval date 2026-04-07
GLM-5
72.3
Rank #33/86 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner76.3
Rank #13/86 · confidence 2 · eval date 2026-04-07
GLM-5
65.6
Rank #9/9 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner70.6
Rank #4/9 · confidence 2 · eval date 2026-04-07
GLM-5
winner98.2
Rank #6/84 · confidence 4 · eval date 2026-03-01
GLM-5.1
97.7
Rank #7/84 · confidence 2 · eval date 2026-04-07
GLM-5
43.2
Rank #11/11 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner68.7
Rank #7/11 · confidence 2 · eval date 2026-04-07
GLM-5
57.7
Rank #20/28 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner62.3
Rank #10/28 · confidence 2 · eval date 2026-04-07
GLM-5
51.0
Rank #21/50 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner60.1
Rank #12/50 · confidence 2 · eval date 2026-04-07
GLM-5
31.1
Rank #22/23 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner71.8
Rank #12/23 · confidence 2 · eval date 2026-04-07
GLM-5
56.2
Rank #33/46 · confidence 4 · eval date 2026-03-01
GLM-5.1
winner63.5
Rank #24/46 · confidence 2 · eval date 2026-04-07
GLM-5
43.9
Rank #39/53 · confidence 4 · eval date 2026-03-01
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-5 | GLM-5.1 |
|---|---|---|
Winner: GLM-5.1 | GLM-5 glm-5 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-5 | GLM-5.1 |
|---|---|---|
90 tests | GLM-5 speed / latency 37 tok/s / 26385ms input / output No data | GLM-5.1 speed / latency 35 tok/s / 17508ms input / output No data |
30 tests | GLM-5 speed / latency 57 tok/s / 16879ms input / output No data | GLM-5.1 speed / latency N/A / N/A input / output No data |
30 tests | GLM-5 speed / latency 44 tok/s / 27770ms input / output No data | GLM-5.1 speed / latency 50 tok/s / 9040ms input / output No data |
25 tests | GLM-5 speed / latency 64 tok/s / 21679ms input / output No data | GLM-5.1 speed / latency 62 tok/s / 25980ms input / output No data |
15 tests | GLM-5 speed / latency N/A / N/A input / output No data | GLM-5.1 speed / latency 58 tok/s / 14051ms input / output No data |
GLM-5 glm-5 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-5 glm-5 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-5 glm-5 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-5 GLM-5 speed / latency No data input / output $0.040/request | GLM-5.1 glm-5.1 speed / latency No data input / output $3.00/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 |
|---|
