Claude vs Grok
Based on 9,648 claims, updated June 29, 2026
Claude vs Grok: The Careful AI vs The Bold One
Claude and Grok sit at opposite ends of the AI personality spectrum. Claude, built by Anthropic, is trained to be thoughtful, measured, and transparent about uncertainty. Grok, from xAI, is designed to be more direct and willing to engage with topics other models might avoid.
These different design philosophies affect more than just tone — they influence how each model handles ambiguous facts, contested claims, and edge cases. Claude may hedge more on uncertain information, while Grok tends to commit to an answer more readily.
NoParrot's claim-level data reveals where these contrasting approaches still lead to the same factual conclusions. When both the careful and the bold model agree, that's a particularly strong signal of accuracy.
Side-by-side metrics
| Metric | Claude | Grok |
|---|---|---|
| Accuracy | 71.1% | 61.5% |
| Total claims | 2,204 | 7,444 |
| Verified | 26.4% | 32.2% |
| Disputed | 12.7% | 19% |
| Best category | Other | Other |
| Worst category | — | — |
Accuracy by Category
Categories with at least 50 claims for both models.
| Category | Claude | Grok |
|---|---|---|
| Other | 71.1% | 61.5% |
Key Differences
- • Claude leads on overall accuracy (71.1% vs 61.5% for Grok).
- • Grok has been measured on more claims (7,444 vs 2,204 for Claude), so its score is more stable.
- • Claude has a lower disputed rate (12.7% vs 19% for Grok) — fewer of its claims are contradicted by other models.
- • Both models perform best on Other.
How We Measure Accuracy
NoParrot sends each question to four major AI assistants at the same time and compares their responses at the claim level. A claim is verified when multiple independent models reach the same factual conclusion. Accuracy here is the share of a model's claims that match the cross-model consensus across questions analyzed on the platform — not a synthetic benchmark.
Verified % is the share of a model's claims that other models independently confirmed. Disputed % is the share that another model directly contradicted. Categories are inferred from the question topic; only categories with at least 50 claims for both models are shown side by side.
Try this comparison yourself
Sign up free and ask any question to Claude and Grok side by side.
Try NoParrot free