GLM 5.2 vs GPT-4o (Comparative Analysis)
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Overview
GPT-4o was released 2 years before GLM 5.2.
 GLM 5.2 |  GPT-4o | |
|---|---|---|
Model Provider The organization behind this AI's development | Z.AI | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 128K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 128K tokens | 16.4K tokens |
Release Date When this model first became publicly available | June 16, 2026 1 month ago June 16th, 2026 | May 13, 2024 2 years ago May 13th, 2024 |
Knowledge Cutoff Latest training-data date reported by the provider | Not reported | October 31, 2023 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GLM 5.2 | GPT-4o | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image📁File |
Reasoning Controls Defaults and configurable reasoning effort | Enabled by defaultEffort: Extra High, HighDefault: High | Not reported |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Other | GPT |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured OutputReasoning Mode✓Content Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
GLM 5.2 is roughly 0.03x less expensive compared to GPT-4o for input tokens and roughly 0.02x less expensive for output tokens.
| GLM 5.2 | GPT-4o | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.07 per million tokens | $2.50 per million tokens |
Output Token Cost Cost per million output tokens | $0.22 per million tokens | $10.00 per million tokens |
Cache Read Cost Cost to reuse cached input tokens | $0.01 per million tokens | $1.25 per million tokens |
Benchmarks
Compare relevant benchmarks between GLM 5.2 and GPT-4o.
| GLM 5.2 | GPT-4o | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 52.6 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 68.8 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 45.7 (Artificial Analysis index; higher is better) | Benchmark not available. |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,362 Elo (#5 in 3D (59.7% win rate)) | 947 Elo (#109 in Game Dev (42.3% win rate)) |
At a Glance
Quick overview of what makes GLM 5.2 and GPT-4o unique.
GLM 5.2 by Z.AI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Very affordable at $0.07/M input and $0.22/M output tokens. Released June 16th, 2026.GPT-4o by OpenAI understands both text and images, can use external tools and APIs, generates structured data. It can handle standard conversations with its 128K token context window. Reasonably priced at $2.50/M input and $10.00/M output tokens. Includes built-in content moderation for safer outputs. Released May 13th, 2024.Explore More Comparisons
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