Data points: 92
Model compare
The readout for GLM-5 Turbo and GPT-5.1, before the detailed comparison sheet.
Weighted outcome: GPT-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.1
GPT-5.1 has the higher weighted result; Model A / B score 48 to 52.
Evidence depth
92 data points
Includes 14 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.1
The charts below split 22 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 Turbo and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GLM-5 Turbo | GPT-5.1 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 48.0 pts | 52.0 pts |
| Benchmark category leads | 3 categories | 2 categories |
| Operational advantages | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage |
| Context window | 202.8K 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 Turbo | GPT-5.1 |
|---|---|---|
| Developer | Z.ai | OpenAI |
| Released | Mar 2026 | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | z-ai/glm-5-turbo | openai/gpt-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for GLM-5 Turbo and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GLM-5 Turbo
GLM-5 Turbo leads these benchmark categories: Agents, Coding, Instruction following.
GPT-5.1
GPT-5.1 is stronger in benchmark categories (Reasoning, Knowledge) 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 Turbo
52.6
Avg. score
GPT-5.1
52
GLM-5 Turbo leads by 4.3
GLM-5 Turbo leads by 6.5
GPT-5.1 leads by 0.6
GPT-5.1 leads by 5.3
GPT-5.1
No data
No data
GLM-5 Turbo leads by 0.1
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GLM-5 Turbo
60.7
Rank #59/89 · confidence 1 · eval date 2026-03-01
GPT-5.1
winner75.0
Rank #3/89 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
84.7%
Rank #47/188 · confidence 4
GPT-5.1
winner87.3%
Rank #33/188 · confidence 4
GLM-5 Turbo
0.3
Rank #68/73 · confidence 1 · eval date 2026-03-01
GPT-5.1
winner4.9
Rank #34/73 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
25.4%
Rank #45/187 · confidence 4
GPT-5.1
winner26.5%
Rank #40/187 · confidence 4
GLM-5 Turbo
winner43.6%
Rank #40/185 · confidence 4
GPT-5.1
43.3%
Rank #42/185 · confidence 4
GLM-5 Turbo
winner43.6
Rank #43/96 · confidence 1 · eval date 2026-03-01
GPT-5.1
43.3
Rank #45/96 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
29.0
Rank #46/90 · confidence 1 · eval date 2026-03-01
GPT-5.1
winner37.6
Rank #31/90 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
84.7
Rank #46/96 · confidence 1 · eval date 2026-03-01
GPT-5.1
winner87.3
Rank #36/96 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
winner38.1
Rank #38/99 · confidence 1 · eval date 2026-03-01
GPT-5.1
36.9
Rank #42/99 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
25.4
Rank #43/96 · confidence 1 · eval date 2026-03-01
GPT-5.1
winner26.5
Rank #39/96 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
winner62.2
Rank #59/90 · confidence 1 · eval date 2026-03-01
GPT-5.1
51.3
Rank #65/90 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
winner1296.0
Rank #16/66 · confidence 1 · eval date 2026-03-01
GPT-5.1
1212.0
Rank #38/66 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
winner73.2
Rank #28/86 · confidence 1 · eval date 2026-03-01
GPT-5.1
72.9
Rank #30/86 · confidence 1 · eval date 2025-11-13
GLM-5 Turbo
winner98.5
Rank #2/84 · confidence 1 · eval date 2026-03-01
GPT-5.1
81.9
Rank #52/84 · 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 Turbo | GPT-5.1 |
|---|---|---|
| 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 Turbo | GPT-5.1 |
|---|---|---|
0 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | GLM-5 Turbo speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | GLM-5 Turbo glm-5-turbo speed / latency N/A / N/A input / output $0.551/M/$2.34/M | GPT-5.1 openai/gpt-5.1 speed / latency N/A / N/A input / output $0.450/M |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.082/M/$0.274/M | GPT-5.1 gpt-5.1 speed / latency No data input / output $0.086/M | |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.411/M/$2.05/M | GPT-5.1 gpt-5.1 speed / latency No data input / output $0.103/M | |
GLM-5 Turbo glm-5-turbo speed / latency No data input / output $0.514/M/$2.26/M | GPT-5.1 gpt-5.1-2025-11-13 speed / latency No data input / output $1.28/M |
Weighted outcome: GPT-5.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputText outputTool callingJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
