LLM Comparison
Claude Sonnet 4.6 vs Grok 4.20
Side-by-side specs, pricing & capabilities · Updated May 2026
Price vs Intelligence
Add to comparison
2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 52 5.7 | 77 19.1 |
| Family | Claude | Grok |
| Status | Current | Current |
| Release Date | Feb 2026 | Mar 2026 |
| Context Window | 1.0M tokens | 2.0M tokens |
| Input Price | $3.00/M tokens | $2.00/M tokens |
| Output Price | $15.00/M tokens | $6.00/M tokens |
| Pricing Notes | Cache read: $0.3000/M tokens | Cache read: $0.2000/M tokens |
| Capabilities | textvisioncodetool-use | textvisioncode |
| Max Output | 128K tokens | — |
| API Identifier | anthropic/claude-sonnet-4.6 | x-ai/grok-4.20 |
| Benchmarks | ||
| MMLU | 86.7anthropic | — |
| GPQA Diamond | 89.9anthropic | — |
| SWE-bench Verified | 72.5anthropic | — |
| Terminal-Bench 2.0 | 51anthropic | — |
| MATH 500 | 54.2anthropic | — |
| LiveCodeBench | 41.5anthropic | — |
| Berkeley Function Calling | 88.3anthropic | — |
| HLE | 30openrouter | — |
| GPQA-AA Elo | 1674artificial-analysis | — |
| View Claude Sonnet 4.6 | View Grok 4.20 | |
Cost Calculator
Enter your expected monthly token usage to compare costs.
| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Grok 4.20Cheapest | $2.00 | $3.00 | $5.00 | — |
| Claude Sonnet 4.6 | $3.00 | $7.50 | $10.50 | +110% |
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.
xAI
Grok 4.20
Grok 4.20 is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $2.00/M input tokens.
More Comparisons
Looking for more AI models?
Browse All LLMs