Key Takeaways
GPT-5.2 Pro wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
GLM 4.5V wins:
- Cheaper input tokens
- Cheaper output tokens
Price Advantage
GLM 4.5V
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
GPT-5.2 Pro
Pricing Comparison
Price Comparison
| Metric | GPT-5.2 Pro | GLM 4.5V | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $10.50 | $0.60 | GLM 4.5V |
| Output (per 1M tokens) | $84.00 | $1.80 | GLM 4.5V |
| Cache Read (per 1M) | N/A | $0.11 | GLM 4.5V |
Using a 3:1 input/output ratio, GLM 4.5V is 97% cheaper overall.
GPT-5.2 Pro Providers
No provider data available
GLM 4.5V Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
6
GPT-5.2 Pro Wins
0
GLM 4.5V Wins
Benchmark Scores
| Benchmark | GPT-5.2 Pro | GLM 4.5V | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 51.3 | 12.7 | |
Coding Index Code generation & understanding | 48.7 | 10.8 | |
Math Index Mathematical reasoning | 99.0 | 15.3 | |
MMLU Pro Academic knowledge | 87.4 | 75.1 | |
GPQA Graduate-level science | 90.3 | 57.3 | |
LiveCodeBench Competitive programming | 88.9 | 35.2 |
GPT-5.2 Pro significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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GPT-5.2 Pro
Other models
Context & Performance
Context Window
GPT-5.2 Pro
400,000
tokens
GLM 4.5V
65,536
tokens
GPT-5.2 Pro has a 84% larger context window.
Speed Performance
| Metric | GPT-5.2 Pro | GLM 4.5V | Winner |
|---|---|---|---|
| Tokens/second | 65.7 tok/s | 33.7 tok/s | |
| Time to First Token | 74.76s | 28.78s |
GPT-5.2 Pro responds 95% faster on average.
Capabilities
Feature Comparison
| Feature | GPT-5.2 Pro | GLM 4.5V |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-5.2 Pro | GLM 4.5V |
|---|---|---|
| License | Proprietary | Open Source |
| Author | OpenAI | Z-ai |
| Released | Dec 2025 | Aug 2025 |
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text
GLM 4.5V Modalities
Input
textimage
Output
text