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GPT-4o Mini vs GLM-5
A detailed comparison of GPT-4o Mini (OpenAI) and GLM-5 (Zhipu AI) across pricing, performance, and features.
Pricing Comparison
| Metric | GPT-4o Mini | GLM-5 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.15 | $1.00 | +567% |
| Output / 1M tokens | $0.60 | $3.20 | +433% |
| Context window | 128K | 200K | — |
| Max output | 16.384K | 128K | — |
Benchmark Comparison
| Benchmark | GPT-4o Mini | GLM-5 |
|---|---|---|
| MMLU-Pro | 68% | 70.4% |
| HumanEval | 87.2% | 91% |
| GPQA | — | 72% |
Capabilities
| Capability | GPT-4o Mini | GLM-5 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✗ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
GPT-4o Mini Strengths
- ✓Extremely cheap
- ✓Fast responses
- ✓Good enough for many production tasks
GPT-4o Mini Weaknesses
- ✗Weaker reasoning than full models
- ✗Can hallucinate more on complex topics
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: GPT-4o Mini is the more affordable option at $0.15/$0.6 per 1M tokens.
Higher benchmarks: GLM-5 scores higher on average across available benchmarks (77.8% avg).
Larger context: GLM-5 supports 200K tokens.
Choose GPT-4o Mini if cost matters most. Choose GLM-5 if you need the best possible quality for complex tasks.