OpenAI
o3-pro
o3-pro from OpenAI: High-effort o3 tier for difficult technical reasoning and careful answers.
- Context
- 200K
- Max output
- 100K
- Input / 1M tokens
- $20.00
- Output / 1M tokens
- $80.00
Accepts
- Text input
- Image input
Produces
- Text output
AI model comparison
Compare pricing, context limits, supported inputs and deployment options to choose a model for your workflow.
o3-pro from OpenAI lists 200K context, 100K maximum output, $20.00 input per 1M tokens, $80.00 output per 1M tokens. GLM-4.6V from Z.ai / Zhipu AI lists 128K context, 32.77K maximum output, $0.30 input per 1M tokens, $0.90 output per 1M tokens. Compare the inputs, outputs and deployment options below to see which fits your workflow.
OpenAI
o3-pro from OpenAI: High-effort o3 tier for difficult technical reasoning and careful answers.
Accepts
Produces
Z.ai / Zhipu AI
GLM-4.6V from Z.ai / Zhipu AI: GLM vision model for visual reasoning, documents, and multimodal agents.
Accepts
Produces
At a glance
Compare the available figures below, then try both models on the work you need to do.
o3-pro
GLM-4.6V
Context capacity
Higher listed limit
o3-pro:200K
GLM-4.6V:128K
o3-pro
Maximum output
Higher listed limit
o3-pro:100K
GLM-4.6V:32.77K
o3-pro
Input price
Lower listed token rate
o3-pro:$20.00
GLM-4.6V:$0.30
GLM-4.6V
Output price
Lower listed token rate
o3-pro:$80.00
GLM-4.6V:$0.90
GLM-4.6V
Specifications
| Specification | o3-pro | GLM-4.6V |
|---|---|---|
| Provider | OpenAI | Z.ai / Zhipu AI |
| Listed pricing route | OpenAI | Z.ai / Zhipu AI |
| Model family | o-pro | glm |
| Accepted inputs | text, image | text, image, video |
| Produced outputs | text | text |
| Context window | 200KHigher | 128K |
| Max output | 100KHigher | 32.77K |
| Input price / 1M | $20.00 | $0.30Lower |
| Output price / 1M | $80.00 | $0.90Lower |
| Reasoning mode | Documented | Documented |
| Tool calling | Documented | Documented |
| Image input | Documented | Documented |
| Audio input | Not documented | Not documented |
| Structured output | Documented | Not documented |
| License | Proprietary | Open weights |
Workload guidance
Consider o3-pro if you need larger context or larger maximum output. Consider GLM-4.6V if you need a lower listed input rate or a lower listed output rate. GLM-4.6V offers downloadable weights; o3-pro is listed as a proprietary model. Compare licence terms and operating costs before choosing a deployment. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.
Explore each model’s features, API requirements and licence terms in the sources below.
o3-pro
OpenAI
Profile updated Oct 13, 2026
GLM-4.6V
Z.ai / Zhipu AI
Profile updated Oct 13, 2026
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