Claude Sonnet 5.5 vs Grok 4.6
Claude Sonnet 5.5 (Anthropic) and Grok 4.6 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- Claude Sonnet 5.5 has a larger context window (1M vs 500K tokens).
- Claude Sonnet 5.5 ranks higher for coding (96th vs 87th percentile).
| Attribute | Claude Sonnet 5.5 | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 156 |
| Coding | 96 | 87 |
| Math | 91 | 87 |
| Reasoning & Knowledge | 76 | 70 |
| Agentic & Tools | 100 | 92 |
| Specifications | ||
| Developer | Anthropic | xAI |
| Family | Claude | Grok |
| Released | Sep 28, 2026 | Aug 12, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1M | 500K |
| Price — $/M input | $2.00 | $2.00 |
| Price — $/M output | $10.00 | $6.00 |
| Inputs | text, image, file | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 99% |
| APEX | 76% | 65% |
| GPQA Diamond | 96% | 94% |
| SimpleQA Verified | 47% | 49% |
| WebDev Arena | 1699 | 1618 |
| ARC-AGI | — | 88% |
| ARC-AGI-2 | — | 67% |
| Humanity's Last Exam | — | 43% |
| SciCode | — | 56% |
| SimpleBench | — | 76% |
| WeirdML | — | 67% |
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.
Frequently asked questions
Which is cheaper, Claude Sonnet 5.5 or Grok 4.6?
Claude Sonnet 5.5 is cheaper on input tokens at $2.00 per million, versus $2.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Sonnet 5.5 or Grok 4.6?
Claude Sonnet 5.5 supports up to 1M tokens, compared with 500K for the other.
Which is better for coding, Claude Sonnet 5.5 or Grok 4.6?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Sonnet 5.5 ranks higher — 96th vs 87th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.