xAI: Grok Latest vs Anthropic: Claude Sonnet 5
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-08.
| xAI: Grok Latest | Anthropic: Claude Sonnet 5 | |
|---|---|---|
| Vendor | ~x-ai | anthropic |
| Quality Score | 100 | 100 |
| Benchmark Score | 5.8 | 63.9 |
| Input Price | $2.00/M | $2.00/M |
| Output Price | $6.00/M | $10.00/M |
| Context Window | 500,000 | 1,000,000 |
| Max Output | 450,000 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 11.4 | 63.0 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, Grok Latest costs $3.50 and Claude Sonnet 5 costs $4.50, so Grok Latest is about 1.3 times cheaper for the same work.
Claude Sonnet 5 reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 750 pages for Grok Latest.
On our blended benchmark score Claude Sonnet 5 leads 63.9 to 5.8.
Across the 20 tasks where they differ, Grok Latest scores higher on 2 (JSON Extraction, Bulk Data Labeling), Claude Sonnet 5 on 18 (SQL Generation, Code Review, Code Completion and others).
Grok Latest was released in July 2026 and Claude Sonnet 5 in June 2026.
Pick Grok Latest if you need lower cost; pick Claude Sonnet 5 if you need long documents, benchmark performance or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | xAI: Grok Latest | Anthropic: Claude Sonnet 5 |
|---|---|---|
| SQL Generation | 134 | 140 |
| Code Review | 134 | 144 |
| Code Completion | 118 | 118 |
| Code Refactoring | 137 | 146 |
| Bug Fixing | 138 | 148 |
| Unit Test Generation | 125 | 131 |
| Code Documentation | 131 | 135 |
| Regex Writing | 119 | 123 |
| CI/CD Pipelines | 121 | 127 |
| Frontend Component Design | 123 | 129 |
| Data Analysis | 125 | 133 |
| CSV / Spreadsheet Cleanup | 133 | 135 |
| ETL Scripting | 129 | 136 |
| JSON Extraction | 122 | 121 |
| Bulk Data Labeling | 119 | 118 |
| OCR / Document Parsing | 131 | 134 |
| Table Extraction from PDFs | 131 | 134 |
| Long-Document Summarization | 139 | 146 |
| Short-Form Summarization | 115 | 116 |
| Blog Post Writing | 122 | 128 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →