LLM Comparison
Sonar Pro Search vs Grok 4 Fast
Side-by-side specs, pricing & capabilities · Updated April 2026
Add to comparison
2/6 modelsSame tier:
S Sonar Pro Search | ||
|---|---|---|
| Organization | Perplexity AI | |
| OpenTools Score | ||
| Family | Sonar | Grok |
| Status | Current | Current |
| Release Date | Oct 2025 | Sep 2025 |
| Context Window | 200K tokens | 2.0M tokens |
| Input Price | $3.00/M tokens | $0.20/M tokens |
| Output Price | $15.00/M tokens | $0.50/M tokens |
| Pricing Notes | — | Cache read: $0.0500/M tokens |
| Capabilities | textvisioncode | textvisioncode |
| Max Output | 8K tokens | 30K tokens |
| API Identifier | perplexity/sonar-pro-search | x-ai/grok-4-fast |
| Benchmarks | ||
| MMLU | 83 | — |
| View Sonar Pro Search | View Grok 4 Fast | |
Cost Calculator
Enter your expected monthly token usage to compare costs.
| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Grok 4 FastCheapest | $0.20 | $0.25 | $0.45 | — |
| Sonar Pro Search | $3.00 | $7.50 | $10.50 | +2233% |
Perplexity AI
Sonar Pro Search
Sonar Pro Search is a multimodal llm from Perplexity AI. Supports up to 200,000 token context window. Achieves 83.0% on MMLU. Available from $3.00/M input tokens.
xAI
Grok 4 Fast
Grok 4 Fast is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $0.20/M input tokens.
More Comparisons
Looking for more AI models?
Browse All LLMs