GLM 5.2 vs Sonar Pro (Comparative Analysis)
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Overview
Sonar Pro was released 1 year before GLM 5.2.
 GLM 5.2 |  Sonar Pro | |
|---|---|---|
Model Provider The organization behind this AI's development | Z.AI | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 200K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 1M tokens | 8K tokens |
Release Date When this model first became publicly available | June 16, 2026 1 month ago June 16th, 2026 | March 7, 2025 1 year ago March 7th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GLM 5.2 | Sonar Pro | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image |
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 | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | Function CallingStructured OutputReasoning ModeContent Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
GLM 5.2 is roughly 0.1x less expensive compared to Sonar Pro for input tokens and roughly 0.09x less expensive for output tokens.
| GLM 5.2 | Sonar Pro | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.42 per million tokens | $3.00 per million tokens |
Output Token Cost Cost per million output tokens | $1.40 per million tokens | $15.00 per million tokens |
Web Search Cost Additional cost for each web search operation | Not specified | $0.005 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.07 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between GLM 5.2 and Sonar Pro.
| GLM 5.2 | Sonar Pro | |
|---|---|---|
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 | 1,363 Elo (#4 in 3D (59.9% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes GLM 5.2 and Sonar Pro 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 $0.42/M input and $1.40/M output tokens. Released June 16th, 2026.Sonar Pro by Perplexity understands both text and images. It can handle standard conversations with its 200K token context window. Premium pricing at $3.00/M input and $15.00/M output tokens. Released March 7th, 2025.Explore More Comparisons
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