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Claude Sonnet 4.6 vs Grok 4
Side-by-side reference. See individual pages for full details: Claude Sonnet 4.6 · Grok 4.
| Claude Sonnet 4.6 | Grok 4 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Family | claude-4 | grok-4 |
| Released | 2025-09 | 2025-07 |
| Context window | 1M | 256K |
| Max output | 64K | 33K |
| Knowledge cutoff | 2025-07 | 2024-11 |
| Modalities (in) | text, image, pdf | text, image |
| Modalities (out) | text | text |
| Input / 1M | $3.00 | $3.00 |
| Output / 1M | $15.00 | $15.00 |
| Cache read | $0.300 | $0.750 |
| Batch input | $1.50 | — |
| Batch output | $7.50 | — |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Vision | Yes | Yes |
| Extended thinking | Yes | Yes |
| Prompt caching | Yes | Yes |
| Batch API | Yes | No |
| Fine-tuning | No | No |
| Open weights | No | No |
| License | proprietary | proprietary |
| API id | claude-sonnet-4-6 | grok-4 |
Prices in USD per 1M tokens. Verify against provider pricing pages before relying on figures for production cost estimates.