Data points: 73
The readout for GLM-5.1 and GPT-5, before the detailed comparison sheet.
Decision read
GLM-5.1
GLM-5.1 currently has the stronger profile, with verified wins split 4 to 2.
Evidence depth
73 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GLM-5.1
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare GLM-5.1 vs GPT-5glm-5-1-vs-gpt-5 | Model A GLM-5.1 | Model B GPT-5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests | Average speed, First-token latency |
| Model metadata | No OpenRouter metadata is available yet for this model. | GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | Zhipu AI | OpenAI |
| Context window | No data | 128K tokens |
| Max output | No data | 16.4K tokens |
| Released | No data | Aug 2025 |
| Modalities | No data | Input FileImageText Output Text |
| Features | None listed | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | 2024-09-30 |
| OpenRouter ID | No data | openai/gpt-5-chat |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-5.1 | GPT-5 |
|---|---|---|
| HLE | 28.0%#18 | 26.5%#24 |
| GPQA | 86.8%#22 | 85.4%#31 |
| SciCode | 43.8%#26 | 42.9%#31 |
| Input price | $1.40/M#32 | $1.25/M#30 |
| Time to first token | 0.90 s#31 | 62.85 s#104 |
| Output price | $4.40/M#33 | $10.00/M#41 |
| Output speed | 71.0 tok/s#72 | 109.6 tok/s#44 |
| Blended price | $2.15/M#53 | $3.44/M#58 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-5.1 | GPT-5 |
|---|---|---|
| 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-5.1 | GPT-5 |
|---|---|---|
V-API20 tests | GLM-5.1 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 95 tok/s / 1234ms input / output No data |
CatClaw API15 tests | GLM-5.1 speed / latency 54 tok/s / 12475ms input / output No data | GPT-5 speed / latency 45 tok/s / 3704ms input / output No data |
OpenRouter15 tests | GLM-5.1 speed / latency 58 tok/s / 14051ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
TradingBase API10 tests | GLM-5.1 speed / latency 42 tok/s / 15344ms input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
星见雅 API10 tests | GLM-5.1 speed / latency 22 tok/s / 9579ms input / output No data | GPT-5 speed / latency 38 tok/s / 15844ms input / output No data |
GLM-5.1 GLM-5.1 speed / latency No data input / output $0/M / $0/M | GPT-5 gpt-5 speed / latency No data input / output $1.07/M / $8.56/M | |
GLM-5.1 ZhipuAI/GLM-5.1 speed / latency No data input / output $0.0068/M / $0.0068/M | GPT-5 gpt-5 speed / latency No data input / output $0.036/M / $0.285/M | |
GLM-5.1 glm-5.1 speed / latency No data input / output $0.010/M / $0.010/M | GPT-5 gpt-5 speed / latency No data input / output $1.35/M / $10.80/M | |
GLM-5.1 glm-5.1 speed / latency No data input / output $0.020/M / $0.040/M | GPT-5 gpt-5 speed / latency No data input / output $0.020/M / $0.160/M | |
GLM-5.1 glm-5.1 speed / latency No data input / output $0.037/M / $0.037/M | GPT-5 gpt-5-chat speed / latency No data input / output $0.037/M / $0.300/M |
This report only uses LMSpeed data for GLM-5.1 and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-5.1 | GPT-5 |
|---|---|---|
| When to choose each model | GLM-5.1 GLM-5.1 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | GPT-5 GPT-5 is stronger when you prioritize Average speed, First-token latency. |
TL;DR: GLM-5.1 leads across 73 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-5.1 vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
