Data points: 81
The readout for GLM-4.5 and GPT-5.2, before the detailed comparison sheet.
Decision read
GPT-5.2
GPT-5.2 currently has the stronger profile, with verified wins split 1 to 5.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare GLM-4.5 vs GPT-5.2glm-4-5-vs-gpt-5-2 | Model A GLM-4.5 | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | Free providers | Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests |
| Model metadata | GLM-4.5 exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, JSON mode. | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | No data | OpenAI |
| Context window | 131.1K tokens | 128K tokens |
| Max output | 98.3K tokens | 16.4K tokens |
| Released | Jul 2025 | Dec 2025 |
| Modalities | Input Text Output Text | Input FileImageText Output Text |
| Features | Text inputText outputTool callingJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Other | GPT |
| Knowledge cutoff | 2024-12-31 | No data |
| OpenRouter ID | z-ai/glm-4.5 | openai/gpt-5.2-chat |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-4.5 | GPT-5.2 |
|---|---|---|
| LiveCodeBench | 73.8%#26 | 88.9%#4 |
| MMLU-Pro | 83.5%#25 | 87.4%#6 |
| GPQA | 78.2%#60 | 90.3%#9 |
| HLE | 12.2%#62 | 35.4%#9 |
| SciCode | 34.8%#76 | 52.1%#9 |
| Input price | $0.600/M#23 | $1.75/M#35 |
| Output price | $2.20/M#25 | $14.00/M#43 |
| Time to first token | 1.01 s#36 | 115.69 s#108 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-4.5 | GPT-5.2 |
|---|---|---|
| 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-4.5 | GPT-5.2 |
|---|---|---|
N1N15 tests | GLM-4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
Rnglg2 API5 tests | GLM-4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data |
WONG公益站5 tests | GLM-4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 64 tok/s / 2953ms input / output No data |
WSocket AI5 tests | GLM-4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 54 tok/s / 1449ms input / output No data |
小水管 API5 tests | GLM-4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 71 tok/s / 2893ms input / output No data |
GLM-4.5 ZhipuAI/GLM-4.5 speed / latency No data input / output $0/M / $0/M | GPT-5.2 GPT-5.2 speed / latency No data input / output $75.00/M / $75.00/M | |
GLM-4.5 glm-4.5 speed / latency No data input / output $0.010/M / $0.010/M | GPT-5.2 gpt-5.2-chat-latest speed / latency No data input / output $75.00/M / $600.00/M | |
GLM-4.5 zai-org/GLM-4.5 speed / latency No data input / output $1.03/M / $1.03/M | GPT-5.2 gpt-5.2-medium speed / latency No data input / output $0.024/M / $0.192/M | |
GLM-4.5 glm-4.5 speed / latency No data input / output $0.041/M / $0.164/M | GPT-5.2 gpt-5.2-xhigh speed / latency No data input / output $0.072/M / $0.575/M | |
GLM-4.5 glm-4.5 speed / latency No data input / output $0.041/M / $0.151/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.120/M / $0.959/M |
This report only uses LMSpeed data for GLM-4.5 and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-4.5 | GPT-5.2 |
|---|---|---|
| When to choose each model | GLM-4.5 GLM-4.5 is stronger when you prioritize Free providers. | GPT-5.2 GPT-5.2 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests. |
TL;DR: GPT-5.2 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-4.5 vs GPT-5.2 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.
