LLM Comparison
Claude Sonnet 4.6 vs Sonar Reasoning Pro
Side-by-side specs, pricing & capabilities · Updated April 2026
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2/6 modelsSame tier:
 Claude Sonnet 4.6 | S Sonar Reasoning Pro | |
|---|---|---|
| Organization |  Anthropic | Perplexity AI |
| OpenTools Score | 67 7.5 | |
| Family | Claude | Sonar |
| Status | Current | Current |
| Release Date | Feb 2026 | Mar 2025 |
| Context Window | 1.0M tokens | 128K tokens |
| Input Price | $3.00/M tokens | $2.00/M tokens |
| Output Price | $15.00/M tokens | $8.00/M tokens |
| Pricing Notes | Cache read: $0.3000/M tokens | — |
| Capabilities | textvisioncodetool-use | textvisioncodeextended-thinking |
| Max Output | 128K tokens | — |
| API Identifier | anthropic/claude-sonnet-4.6 | perplexity/sonar-reasoning-pro |
| Benchmarks | ||
| MMLU | 88 | 83 |
| HumanEval | 93.7 | — |
| MATH | 79.5 | — |
| GPQA | 68.9 | — |
| View Claude Sonnet 4.6 | View Sonar Reasoning Pro | |
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Sonar Reasoning ProCheapest | $2.00 | $4.00 | $6.00 | — |
| Claude Sonnet 4.6 | $3.00 | $7.50 | $10.50 | +75% |
Anthropic
Claude Sonnet 4.6
Claude Sonnet 4.6 is a multimodal llm from Anthropic. Supports up to 1,000,000 token context window. Achieves 88.0% on MMLU. Available from $3.00/M input tokens.
Perplexity AI
Sonar Reasoning Pro
Sonar Reasoning Pro is a multimodal llm from Perplexity AI. Supports up to 128,000 token context window. Achieves 83.0% on MMLU. Available from $2.00/M input tokens.
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