GLM 4.5 Air vs o1-pro (Comparative Analysis)
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Comparative Analysis: GLM 4.5 Air vs. o1-pro
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Overview
o1-pro was released 4 months before GLM 4.5 Air.
 GLM 4.5 Air |  o1-pro | |
|---|---|---|
Model Provider The organization behind this AI's development | Z.AI | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 131.1K tokens | 200K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 98.3K tokens | 100K tokens |
Release Date When this model first became publicly available | July 25, 2025 11 months ago July 25th, 2025 | March 19, 2025 1 year ago March 19th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | December 31, 2024 | October 31, 2023 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GLM 4.5 Air | o1-pro | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image📁File |
Reasoning Controls Defaults and configurable reasoning effort | Optional | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Other | GPT |
Key Features Advanced capabilities | ✓Function CallingStructured Output✓Reasoning ModeContent Moderation | Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
GLM 4.5 Air is significantly less expensive compared to o1-pro for input tokens and significantly less expensive for output tokens.
| GLM 4.5 Air | o1-pro | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.13 per million tokens | $150.00 per million tokens |
Output Token Cost Cost per million output tokens | $0.85 per million tokens | $600.00 per million tokens |
Web Search Cost Additional cost for each web search operation | Not specified | $0.01 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.02 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between GLM 4.5 Air and o1-pro.
| GLM 4.5 Air | o1-pro | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,230 Elo (#38 in Data Viz (59.4% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes GLM 4.5 Air and o1-pro unique.
GLM 4.5 Air by Z.AI can use external tools and APIs, offers advanced reasoning. It can handle standard conversations with its 131.1K token context window. Very affordable at $0.13/M input and $0.85/M output tokens. Released July 25th, 2025.o1-pro by OpenAI understands both text and images, offers advanced reasoning, generates structured data. It can handle standard conversations with its 200K token context window. Premium pricing at $150.00/M input and $600.00/M output tokens. Includes built-in content moderation for safer outputs. Released March 19th, 2025.Explore More Comparisons
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