Phi 4 vs Sonar Reasoning Pro (Comparative Analysis)
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Comparative Analysis: Phi 4 vs. Sonar Reasoning Pro
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Overview
Phi 4 was released 1 month before Sonar Reasoning Pro.
 Phi 4 |  Sonar Reasoning Pro | |
|---|---|---|
Model Provider The organization behind this AI's development | Microsoft | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 16.4K tokens | 128K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 16.4K tokens | Not specified tokens |
Release Date When this model first became publicly available | January 10, 2025 1 year ago January 10th, 2025 | March 7, 2025 1 year ago March 7th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | June 30, 2024 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Phi 4 | Sonar Reasoning Pro | |
|---|---|---|
Input Types Supported input formats | 📝Text | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | Not reported | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Other | Other |
Key Features Advanced capabilities | Function Calling✓Structured OutputReasoning ModeContent Moderation | Function CallingStructured Output✓Reasoning ModeContent Moderation |
Open Source Model availability | Available on HuggingFace → | Proprietary |
Pricing
Phi 4 is roughly 0.04x less expensive compared to Sonar Reasoning Pro for input tokens and roughly 0.02x less expensive for output tokens.
| Phi 4 | Sonar Reasoning Pro | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.07 per million tokens | $2.00 per million tokens |
Output Token Cost Cost per million output tokens | $0.14 per million tokens | $8.00 per million tokens |
Web Search Cost Additional cost for each web search operation | Not specified | $0.005 per search |
At a Glance
Quick overview of what makes Phi 4 and Sonar Reasoning Pro unique.
Phi 4 by Microsoft generates structured data. It can handle standard conversations with its 16.4K token context window. Very affordable at $0.07/M input and $0.14/M output tokens. Released January 10th, 2025.Sonar Reasoning Pro by Perplexity understands both text and images, offers advanced reasoning. It can handle standard conversations with its 128K token context window. Reasonably priced at $2.00/M input and $8.00/M output tokens. Released March 7th, 2025.Explore More Comparisons
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