Data points: 158
Model compare
The readout for DeepSeek V4 Pro 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 16 to 84.
Evidence depth
158 data points
Includes 36 benchmark rows, 4 audit samples, and 7 provider examples.
Selection signal
Start with GLM-5.1
The charts below split 47 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 DeepSeek V4 Pro and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | DeepSeek V4 Pro | GLM-5.1 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 16.0 pts | 84.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Cheapest input price, First-token latency, Free providers, Provider coverage | Average speed |
| Context window | 1.0M tokens | 204.8K tokens |
| Max output | 384K 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 | DeepSeek V4 Pro | GLM-5.1 |
|---|---|---|
| Developer | DeepSeek | Z.ai |
| Released | Apr 2026 | Apr 2026 |
| Parameters | No data | No data |
| Tokenizer | DeepSeek | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | deepseek/deepseek-v4-pro | z-ai/glm-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for DeepSeek V4 Pro and GLM-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
DeepSeek V4 Pro
DeepSeek V4 Pro has these operational advantages: Cheapest input price, First-token latency, Free providers, Provider coverage.
GLM-5.1
GLM-5.1 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Average speed).
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
DeepSeek V4 Pro
47.9
Avg. score
GLM-5.1
54.4
GLM-5.1 leads by 2.4
GLM-5.1 leads by 5.7
GLM-5.1 leads by 0.5
GLM-5.1 leads by 12.8
GLM-5.1 leads by 15.8
No data
No data
GLM-5.1 leads by 2.0
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
DeepSeek V4 Pro
winner65.0
Rank #21/84 · confidence 2 · eval date 2026-04-24
GLM-5.1
63.0
Rank #25/84 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner$0.870/M
Rank #34/162 · confidence 4
GLM-5.1
$4.40/M
Rank #97/162 · confidence 4
DeepSeek V4 Pro
winner$0.544/M
Rank #47/162 · confidence 4
GLM-5.1
$2.13/M
Rank #103/162 · confidence 4
DeepSeek V4 Pro
winner$0.435/M
Rank #66/162 · confidence 4
GLM-5.1
$1.38/M
Rank #116/162 · confidence 4
DeepSeek V4 Pro
winner12.9
Rank #18/73 · confidence 2 · eval date 2026-04-24
GLM-5.1
4.6
Rank #37/73 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner90.5%
Rank #18/188 · confidence 4
GLM-5.1
86.8%
Rank #35/188 · confidence 4
DeepSeek V4 Pro
winner33.5%
Rank #24/187 · confidence 4
GLM-5.1
28.0%
Rank #35/187 · confidence 4
DeepSeek V4 Pro
winner66.3
Rank #39/89 · confidence 2 · eval date 2026-04-24
GLM-5.1
62.3
Rank #55/89 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner49.9
Rank #8/33 · confidence 2 · eval date 2026-04-24
GLM-5.1
31.5
Rank #14/33 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
50.6
Rank #39/65 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner62.7
Rank #12/65 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
55.4
Rank #26/37 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner58.4
Rank #14/37 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner59.4
Rank #19/59 · confidence 2 · eval date 2026-04-24
GLM-5.1
55.8
Rank #27/59 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner50.0
Rank #22/96 · confidence 2 · eval date 2026-04-24
GLM-5.1
43.8
Rank #42/96 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner46.4%
Rank #31/185 · confidence 4
GLM-5.1
43.8%
Rank #39/185 · confidence 4
DeepSeek V4 Pro
winner95.2
Rank #2/14 · confidence 2 · eval date 2026-04-24
GLM-5.1
82.6
Rank #14/14 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner82.0
Rank #4/56 · confidence 2 · eval date 2026-04-24
GLM-5.1
64.6
Rank #18/56 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner94.0
Rank #4/90 · confidence 2 · eval date 2026-04-24
GLM-5.1
29.4
Rank #83/90 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
71.8
Rank #21/55 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner77.6
Rank #15/55 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner90.1
Rank #15/24 · confidence 2 · eval date 2026-04-24
GLM-5.1
86.2
Rank #22/24 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner44.3
Rank #17/99 · confidence 2 · eval date 2026-04-24
GLM-5.1
40.2
Rank #28/99 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner43.3
Rank #18/90 · confidence 2 · eval date 2026-04-24
GLM-5.1
24.2
Rank #62/90 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner35.9
Rank #19/96 · confidence 2 · eval date 2026-04-24
GLM-5.1
28.0
Rank #35/96 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner88.8
Rank #29/96 · confidence 2 · eval date 2026-04-24
GLM-5.1
86.8
Rank #38/96 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
1260.0
Rank #28/66 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner1299.0
Rank #14/66 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner76.5
Rank #12/86 · confidence 2 · eval date 2026-04-24
GLM-5.1
76.3
Rank #13/86 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
17.1
Rank #11/19 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner18.2
Rank #7/19 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
96.2
Rank #10/84 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner97.7
Rank #7/84 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
59.8
Rank #14/28 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner62.3
Rank #10/28 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner73.6
Rank #10/23 · confidence 2 · eval date 2026-04-24
GLM-5.1
71.8
Rank #12/23 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner83.4
Rank #11/25 · confidence 2 · eval date 2026-04-24
GLM-5.1
68.0
Rank #18/25 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
50.3
Rank #23/50 · confidence 2 · eval date 2026-04-24
GLM-5.1
winner60.1
Rank #12/50 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner36.4
Rank #14/55 · confidence 2 · eval date 2026-04-24
GLM-5.1
29.9
Rank #22/55 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner1306.0
Rank #15/55 · confidence 2 · eval date 2026-04-24
GLM-5.1
1256.0
Rank #18/55 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner40.3
Rank #15/50 · confidence 2 · eval date 2026-04-24
GLM-5.1
37.8
Rank #18/50 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner67.9
Rank #18/46 · confidence 2 · eval date 2026-04-24
GLM-5.1
63.5
Rank #24/46 · confidence 2 · eval date 2026-04-07
DeepSeek V4 Pro
winner67.4
Rank #19/53 · confidence 2 · eval date 2026-04-24
GLM-5.1
48.9
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 | DeepSeek V4 Pro | GLM-5.1 |
|---|---|---|
Winner: GLM-5.1 | DeepSeek V4 Pro deepseek-v4-pro No audit yet | GLM-5.1 glm-5.1 Audit score 97 10010086100 |
Winner: DeepSeek V4 Pro | DeepSeek V4 Pro deepseek-v4-pro Audit score 87 788486100 | GLM-5.1 glm-5.1 No audit yet |
Winner: GLM-5.1 | DeepSeek V4 Pro deepseek-ai/DeepSeek-V4-Pro No audit yet | GLM-5.1 z-ai/glm-5.1 Audit score 78 70728088 |
Winner: DeepSeek V4 Pro | DeepSeek V4 Pro deepseek-v4-pro Audit score 77 70728084 | GLM-5.1 glm-5.1 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | DeepSeek V4 Pro | GLM-5.1 |
|---|---|---|
60 tests | DeepSeek V4 Pro speed / latency 22 tok/s / 2343ms input / output No data | GLM-5.1 speed / latency 82 tok/s / 9309ms input / output No data |
35 tests | DeepSeek V4 Pro speed / latency 46 tok/s / 5962ms input / output No data | GLM-5.1 speed / latency 35 tok/s / 22863ms input / output No data |
25 tests | DeepSeek V4 Pro speed / latency 41 tok/s / 9833ms input / output No data | GLM-5.1 speed / latency 74 tok/s / 6761ms input / output No data |
25 tests | DeepSeek V4 Pro speed / latency 35 tok/s / 11460ms input / output No data | GLM-5.1 speed / latency 40 tok/s / 17425ms input / output No data |
20 tests | DeepSeek V4 Pro speed / latency 36 tok/s / 12133ms input / output No data | GLM-5.1 speed / latency 58 tok/s / 14051ms input / output No data |
DeepSeek V4 Pro deepseek-ai/deepseek-v4-pro speed / latency No data input / output $0/request | GLM-5.1 glm-5.1 speed / latency No data input / output $0.050/request | |
DeepSeek V4 Pro deepseek-v4-pro speed / latency No data input / output $0.143/M/$0.286/M | GLM-5.1 glm-5.1 speed / latency No data input / output $0/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 |
|---|
