Claude Sonnet 5 vs Grok Build 0.1
Claude Sonnet 5 vs Grok Build 0.1: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- Grok Build 0.1 is 3.2× cheaper than Claude Sonnet 5 for the same mix of input and output tokens.
- Claude Sonnet 5 has the larger context window (1M), useful for long documents and big codebases.
- Claude Sonnet 5 is the more recent release (Jun 30, 2026).
- Choose Grok Build 0.1 if cost matters most; choose Claude Sonnet 5 if you need its specific strengths above. For the best results, test both on your own prompts.
| Claude Sonnet 5 | Grok Build 0.1 | |
|---|---|---|
| Company | Anthropic | xAI |
| Released | Jun 30, 2026 ● | May 20, 2026 |
| Overall index | 156.3 | — |
| GPQA Diamond | 90.5% | — |
| AIME math | 94.7% | — |
| FrontierMath | 65.6% | — |
| SimpleQA Verified | 33.7% | — |
| Input (per 1M tokens) | $2 | $1 ● |
| Output (per 1M tokens) | $10 | $2 ● |
| Cost for 1M input + 1M output tokens | $12.00 | $3.00 ● |
| Providers | 10 ● | 4 |
| Context | 1M ● | 256K |
| Max output | 128K | 225K ● |
| Inputs | Text, Image, Files | Text, Image, Files |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |