Model comparison
GLM-4-9B vs GPT-4o
Z.ai (Zhipu / GLM)GLM-4-9B
- Input
- Free
- Output
- Free
- Context
- 128K
- Released
- 2024-06-05
- Input
- $5.00
- Output
- $15.00
- Context
- 128K
- Released
- 2024-05-13
Short answer
GPT-4o scores higher on 4 of the 4 benchmarks both models report; GLM-4-9B ships open weights while GPT-4o is API-only.
Specs and pricing side by side
| Spec | GLM-4-9B | GPT-4o |
|---|---|---|
| Maker | Z.ai (Zhipu / GLM) | OpenAI |
| Released | 2024-06-05 | 2024-05-13 |
| Context window | 128K | 128Ksame |
| Max output | Not publicly disclosed | 16K |
| Input price | Free | $5.00 |
| Output price | Free | $15.00 |
| Parameters | 9B | Not disclosed |
| License | GLM-4 License (custom open weights) | Proprietary |
| Weights | Open weights | API only |
| Modalities | Text | Text, Image, Audio, Vision |
| Knowledge cutoff | Not publicly disclosed | October 2023 |
Benchmarks both models report
| Benchmark | GLM-4-9B | GPT-4o |
|---|---|---|
| MMLU | 72.4% | 87.2% |
| MATH | 50.6% | 76.6% |
| HumanEval | 71.8% | 91% |
| GPQA | 34.3% | 49.9% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick GLM-4-9B if…
- You want to self-host or fine-tune (open weights, GLM-4 License (custom open weights)).
- Your use case is: local and on-device chat assistants where a small open model is preferred.
Pick GPT-4o if…
- You care about MMLU, MATH, HumanEval (it scores higher on 4 shared benchmarks).
- You need Image / Audio / Vision input, which GLM-4-9B lacks.
- Your use case is: real-time voice assistants and conversational agents (Advanced Voice Mode).
FAQ
Which is better, GLM-4-9B or GPT-4o?
GPT-4o scores higher on 4 of the 4 benchmarks both models report; GLM-4-9B ships open weights while GPT-4o is API-only. The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
What are the context windows of GLM-4-9B and GPT-4o?
GLM-4-9B offers 128K with up to Not publicly disclosed output; GPT-4o offers 128K with up to 16K output.
Is GLM-4-9B newer than GPT-4o?
GLM-4-9B was released 2024-06-05; GPT-4o was released 2024-05-13.