Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%), S…
Model details →Anthropic: Claude Sonnet 4 vs Perplexity: Sonar
Anthropic: Claude Sonnet 4 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
Sonar is lightweight, affordable, fast, and simple to use — now featuring citations and the ability to customize sources. It is designed for companies seeking to integrate lightweight question-and-answer features optimized for speed.
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Sonnet 4 | Perplexity: Sonar | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 127K | 🏆 Anthropic: Claude Sonnet 4 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $3.00 | $1.00 | 🏆 Perplexity: Sonar |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $15.00 | $1.00 | 🏆 Perplexity: Sonar |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | — | 🏆 Anthropic: Claude Sonnet 4 |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 Anthropic: Claude Sonnet 4 |
Frequently asked questions
Is Anthropic: Claude Sonnet 4 better than Perplexity: Sonar?
Anthropic: Claude Sonnet 4 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Sonnet 4 and Perplexity: Sonar?
Input: $3.00 vs $1.00 per 1M tokens. Output: $15.00 vs $1.00 per 1M tokens.
What context windows do Anthropic: Claude Sonnet 4 and Perplexity: Sonar support?
Anthropic: Claude Sonnet 4 supports up to 200K tokens. Perplexity: Sonar supports up to 127K tokens.
Do both Anthropic: Claude Sonnet 4 and Perplexity: Sonar support tool calling?
Anthropic: Claude Sonnet 4: yes. Perplexity: Sonar: not advertised.