GLM 4.5 vs Sonar (Comparative Analysis)
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Overview
Sonar was released 5 months before GLM 4.5.
 GLM 4.5 |  Sonar | |
|---|---|---|
Model Provider The organization behind this AI's development | Z.AI | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 131.1K tokens | 127.1K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 98.3K tokens | Not specified tokens |
Release Date When this model first became publicly available | July 25, 2025 1 year ago July 25th, 2025 | January 27, 2025 1 year ago January 27th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | December 31, 2024 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
GLM 4.5 | Sonar | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | Optional | 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 4.5 is roughly 0.6x less expensive compared to Sonar for input tokens and roughly 2.2x more expensive for output tokens.
| GLM 4.5 | Sonar | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.60 per million tokens | $1.00 per million tokens |
Output Token Cost Cost per million output tokens | $2.20 per million tokens | $1.00 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 | $0.11 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between GLM 4.5 and Sonar.
| GLM 4.5 | Sonar | |
|---|---|---|
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,227 Elo (#38 in 3D (59.7% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes GLM 4.5 and Sonar unique.
GLM 4.5 by Z.AI can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 131.1K token context window. Reasonably priced at $0.60/M input and $2.20/M output tokens. Released July 25th, 2025.Sonar by Perplexity understands both text and images. It can handle standard conversations with its 127.1K token context window. Reasonably priced at $1.00/M input and $1.00/M output tokens. Released January 27th, 2025.Explore More Comparisons
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Models optimized for creative writing
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Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
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