Key Takeaways
GPT-4 wins:
- Faster response time
- Higher intelligence benchmark
- Better at coding
GLM 4.5 wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
Price Advantage
GLM 4.5
Benchmark Advantage
GPT-4
Context Window
GLM 4.5
Speed
GPT-4
Pricing Comparison
Price Comparison
| Metric | GPT-4 | GLM 4.5 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $30.00 | $0.55 | GLM 4.5 |
| Output (per 1M tokens) | $60.00 | $2.00 | GLM 4.5 |
Using a 3:1 input/output ratio, GLM 4.5 is 98% cheaper overall.
GPT-4 Providers
OpenAI $30.00 (Cheapest)
Azure $30.00 (Cheapest)
GLM 4.5 Providers
WandB $0.55 (Cheapest)
Z.AI $0.60
Nebius $0.60
Novita $0.60
Benchmark Comparison
3
Benchmarks Compared
0
GPT-4 Wins
0
GLM 4.5 Wins
Benchmark Scores
| Benchmark | GPT-4 | GLM 4.5 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 12.8 | - | - |
Coding Index Code generation & understanding | 13.1 | - | - |
Aider Real-world code editing | 67.7 | - | - |
GPT-4 significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
Y-axis:
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Other models
Context & Performance
Context Window
GPT-4
8,191
tokens
Max output: 4,096 tokens
GLM 4.5
131,000
tokens
Max output: 131,000 tokens
GLM 4.5 has a 94% larger context window.
Speed Performance
| Metric | GPT-4 | GLM 4.5 | Winner |
|---|---|---|---|
| Tokens/second | 25.4 tok/s | N/A | |
| Time to First Token | 0.73s | N/A |
Capabilities
Feature Comparison
| Feature | GPT-4 | GLM 4.5 |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | GPT-4 | GLM 4.5 |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | OpenAI | Z-ai |
| Released | May 2023 | Jul 2025 |
GPT-4 Modalities
Input
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Output
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GLM 4.5 Modalities
Input
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Output
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