Claude Opus 4.6
VS
Grok 4.20
Claude Opus 4.6 vs Grok 4.20: which wins at real work?
22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.
Claude Opus 4.6 wins 18 of 22 task areas we tested; Grok 4.20 takes 4. Grok 4.20 costs 8.0× less per token ($3.75 vs $30 per 1M).
Grok 4.20 costs 8.0× less per token ($3.75 vs $30 per 1M).
Task by task
| Task area | Claude Opus 4.6 | Grok 4.20 | Winner |
|---|---|---|---|
| Content & Brand |
#14
/ 124
Strong
|
#118
/ 124
Needs editing
|
Claude Opus 4.6 |
| Translation & Localization |
#2
/ 110
Excellent
|
#98
/ 110
Strong
|
Claude Opus 4.6 |
| Data & Analytics |
#10
/ 110
Excellent
|
#102
/ 110
Excellent
|
Claude Opus 4.6 |
| Chef / Home Cooking |
#12
/ 126
Strong
|
#100
/ 126
Needs editing
|
Claude Opus 4.6 |
| Training & Education |
#1
/ 110
Excellent
|
#88
/ 110
Strong
|
Claude Opus 4.6 |
| Creative & Comedy | #10 / 110 | #96 / 110 | Claude Opus 4.6 |
| Sales |
#4
/ 110
Strong
|
#85
/ 110
Usable
|
Claude Opus 4.6 |
| Legal & HR |
#8
/ 110
Excellent
|
#87
/ 110
Strong
|
Claude Opus 4.6 |
| Coding |
#18
/ 115
Excellent
|
#86
/ 115
Usable
|
Claude Opus 4.6 |
| Executive Assistant |
#18
/ 112
Strong
|
#83
/ 112
Usable
|
Claude Opus 4.6 |
| AI Strategy |
#5
/ 126
Strong
|
#59
/ 126
Strong
|
Claude Opus 4.6 |
| Investor & Pitch |
#8
/ 66
Strong
|
#59
/ 66
Usable
|
Claude Opus 4.6 |
| Summarization & Meeting Notes |
#34
/ 110
Excellent
|
#85
/ 110
Excellent
|
Claude Opus 4.6 |
| Structured Output |
#98
/ 113
Strong
|
#48
/ 113
Excellent
|
Grok 4.20 |
| Landing Pages |
#23
/ 72
Strong
|
#66
/ 72
Usable
|
Claude Opus 4.6 |
| RAG, Safety & Grounding |
#59
/ 113
Excellent
|
#96
/ 113
Strong
|
Claude Opus 4.6 |
| Frontend & Landing Pages |
#51
/ 109
Needs editing
|
#15
/ 109
Needs editing
|
Grok 4.20 |
| Research & Competitive Analysis |
#29
/ 110
Strong
|
#52
/ 110
Usable
|
Claude Opus 4.6 |
| Customer Support |
#81
/ 113
Usable
|
#68
/ 113
Usable
|
Grok 4.20 |
| Product & Project Management |
#45
/ 110
Strong
|
#56
/ 110
Strong
|
Claude Opus 4.6 |
| Presentations & Decks |
#54
/ 110
Excellent
|
#46
/ 110
Excellent
|
Grok 4.20 |
| Knowledge & Docs |
#66
/ 110
Usable
|
#70
/ 110
Usable
|
Claude Opus 4.6 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Same task, both models — judged
Both models answered the same test case; an independent judge graded each. Quotes are the judge's actual rationale.
Chef / Home Cooking
Roast chicken dinner with two dietary versions (Meal Timing Test)
“The model provided an expert-level, highly practical timeline with sound culinary techniques and clear formatting, with only a minor adjustment needed for the gravy roux-to-liquid ratio.”
“The timeline contains severe mathematical errors, impossible and unsafe cooking times for the chicken, and burnt potatoes, leading to a complete failure in practical sequencing.”
Frequently asked
Is Claude Opus 4.6 better than Grok 4.20?
Across 22 task areas we benchmarked, Claude Opus 4.6 ranks higher in 18 and Grok 4.20 in 4.
Which is cheaper, Claude Opus 4.6 or Grok 4.20?
Grok 4.20 costs 8.0× less per token ($3.75 vs $30 per 1M).
What is Claude Opus 4.6 better at?
Claude Opus 4.6 out-ranks Grok 4.20 at Content & Brand, Translation & Localization, Data & Analytics.
What is Grok 4.20 better at?
Grok 4.20 out-ranks Claude Opus 4.6 at Structured Output, Frontend & Landing Pages, Customer Support.
More comparisons
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Prompt × model results
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