Microsoft: Phi 4 vs Perplexity: Sonar Reasoning Pro
Side-by-side comparison — pricing, context window, capabilities, and live leaderboard data.
Key differences
- Perplexity: Sonar Reasoning Pro has a 128K-token context window — 7.8× larger than Microsoft: Phi 4's 16K.
- Microsoft: Phi 4 is 97% cheaper per 1K input tokens than Perplexity: Sonar Reasoning Pro ($0.0001 vs $0.0020).
- Microsoft: Phi 4 is built by Microsoft; Perplexity: Sonar Reasoning Pro is built by Perplexity.
- Perplexity: Sonar Reasoning Pro supports vision (image inputs); the other does not.
Specifications
| Microsoft: Phi 4 | Perplexity: Sonar Reasoning Pro | |
|---|---|---|
| Provider | Microsoft | Perplexity |
| Context window | 16K | 128K |
| Max output tokens | 8192 | 8192 |
| Input price / 1K tokens | $0.0001 | $0.0020 |
| Output price / 1K tokens | $0.0001 | $0.0080 |
| Vision support | No | Yes |
| Function calling | No | No |
| License | Proprietary | Proprietary |
About Microsoft: Phi 4
US·Closed[Microsoft Research](/microsoft) Phi-4 is designed to perform well in complex reasoning tasks and can operate efficiently in situations with limited memory or where quick responses are needed. At 14 billion...
View Microsoft: Phi 4 reliability and benchmark history →About Perplexity: Sonar Reasoning Pro
US·ClosedNote: Sonar Pro pricing includes Perplexity search pricing. See [details here](https://docs.perplexity.ai/guides/pricing#detailed-pricing-breakdown-for-sonar-reasoning-pro-and-sonar-pro) Sonar Reasoning Pro is a premier reasoning model powered by DeepSeek R1 with Chain of Thought (CoT). Designed for...
View Perplexity: Sonar Reasoning Pro reliability and benchmark history →Try them yourself
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