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GPT-5 vs GLM-5
A detailed comparison of GPT-5 (OpenAI) and GLM-5 (Zhipu AI) across pricing, performance, and features.
Pricing Comparison
| Metric | GPT-5 | GLM-5 | Difference |
|---|---|---|---|
| Input / 1M tokens | $1.25 | $1.00 | -20% |
| Output / 1M tokens | $10.00 | $3.20 | -68% |
| Context window | 128K | 200K | — |
| Max output | 16.384K | 128K | — |
Benchmark Comparison
| Benchmark | GPT-5 | GLM-5 |
|---|---|---|
| MMLU-Pro | 88.5% | 70.4% |
| HumanEval | 95% | 91% |
| GPQA | 73.5% | 72% |
Capabilities
| Capability | GPT-5 | GLM-5 |
|---|---|---|
| audio | ✓ | ✗ |
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
GPT-5 Strengths
- ✓Strong all-around performance
- ✓Good price for flagship tier
- ✓Multimodal including audio
GPT-5 Weaknesses
- ✗128K context vs 200K+ for newer models
- ✗Codex variants better for pure coding
GLM-5 Strengths
- ✓Open-weight (MIT license) — self-hostable
- ✓77.8% SWE-Bench Verified — top-tier coding
- ✓128K max output — huge generation window
GLM-5 Weaknesses
- ✗MMLU-Pro lags behind Western flagships
- ✗744B parameters — heavy to self-host
- ✗China-based — availability concerns
Quick Verdict
Best value: GLM-5 is the more affordable option at $1/$3.2 per 1M tokens.
Higher benchmarks: GPT-5 scores higher on average across available benchmarks (85.7% avg).
Larger context: GLM-5 supports 200K tokens.
Choose GLM-5 if cost matters most. Choose GPT-5 if you need the best possible quality for complex tasks.