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Claude Sonnet 4.6 vs Grok 4.6
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| Attribute | Claude Sonnet 4.6 | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 152 | 156 |
| Coding | 56 | 90 |
| Math | 44 | 91 |
| Reasoning & Knowledge | 52 | 73 |
| Agentic & Tools | 45 | 95 |
| Specifications | ||
| Developer | Anthropic | xAI |
| Family | Claude | Grok |
| Released | Feb 17, 2026 | Aug 12, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1M | 500K |
| Price — $/M input | $3.00 | $2.00 |
| Price — $/M output | $15.00 | $6.00 |
| Inputs | text, image, file | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 86% | 99% |
| APEX | 43% | 65% |
| ARC-AGI | 87% | 88% |
| ARC-AGI-2 | 60% | 67% |
| FrontierMath | 32% | — |
| FrontierMath Tier 4 | 8% | — |
| GPQA Diamond | 87% | 94% |
| Humanity's Last Exam | 34% | 43% |
| SciCode | 50% | 56% |
| SimpleQA Verified | 36% | 49% |
| SWE-bench Verified | 75% | — |
| Terminal-Bench | 53% | — |
| WebDev Arena | 1521 | 1618 |
| WeirdML | 66% | 67% |
| τ²-bench | 76% | — |
| SimpleBench | — | 76% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.