Claude Haiku 4.5
VS
Grok 4.20
Claude Haiku 4.5 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 Haiku 4.5 wins 12 of 22 task areas we tested; Grok 4.20 takes 10. Grok 4.20 costs 1.6× less per token ($3.75 vs $6 per 1M).
Grok 4.20 costs 1.6× less per token ($3.75 vs $6 per 1M).
Task by task
| Task area | Claude Haiku 4.5 | Grok 4.20 | Winner |
|---|---|---|---|
| Translation & Localization |
#27
/ 110
Excellent
|
#98
/ 110
Strong
|
Claude Haiku 4.5 |
| Structured Output |
#109
/ 113
Usable
|
#48
/ 113
Excellent
|
Grok 4.20 |
| Summarization & Meeting Notes |
#27
/ 110
Excellent
|
#85
/ 110
Excellent
|
Claude Haiku 4.5 |
| Training & Education |
#36
/ 110
Excellent
|
#88
/ 110
Strong
|
Claude Haiku 4.5 |
| Data & Analytics |
#53
/ 110
Excellent
|
#102
/ 110
Excellent
|
Claude Haiku 4.5 |
| Presentations & Decks |
#88
/ 110
Strong
|
#46
/ 110
Excellent
|
Grok 4.20 |
| Legal & HR |
#48
/ 110
Excellent
|
#87
/ 110
Strong
|
Claude Haiku 4.5 |
| AI Strategy |
#91
/ 126
Strong
|
#59
/ 126
Strong
|
Grok 4.20 |
| Customer Support |
#99
/ 113
Usable
|
#68
/ 113
Usable
|
Grok 4.20 |
| Content & Brand |
#89
/ 124
Usable
|
#118
/ 124
Needs editing
|
Claude Haiku 4.5 |
| Product & Project Management |
#38
/ 110
Strong
|
#56
/ 110
Strong
|
Claude Haiku 4.5 |
| Chef / Home Cooking |
#113
/ 126
Needs editing
|
#100
/ 126
Needs editing
|
Grok 4.20 |
| Creative & Comedy | #84 / 110 | #96 / 110 | Claude Haiku 4.5 |
| Executive Assistant |
#73
/ 112
Strong
|
#83
/ 112
Usable
|
Claude Haiku 4.5 |
| Coding |
#94
/ 115
Usable
|
#86
/ 115
Usable
|
Grok 4.20 |
| Frontend & Landing Pages |
#7
/ 109
Usable
|
#15
/ 109
Needs editing
|
Claude Haiku 4.5 |
| Research & Competitive Analysis |
#59
/ 110
Usable
|
#52
/ 110
Usable
|
Grok 4.20 |
| Landing Pages |
#61
/ 72
Usable
|
#66
/ 72
Usable
|
Claude Haiku 4.5 |
| Sales |
#80
/ 110
Usable
|
#85
/ 110
Usable
|
Claude Haiku 4.5 |
| Investor & Pitch |
#63
/ 66
Needs editing
|
#59
/ 66
Usable
|
Grok 4.20 |
| Knowledge & Docs |
#71
/ 110
Usable
|
#70
/ 110
Usable
|
Grok 4.20 |
| RAG, Safety & Grounding |
#97
/ 113
Strong
|
#96
/ 113
Strong
|
Grok 4.20 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Haiku 4.5 better than Grok 4.20?
Across 22 task areas we benchmarked, Claude Haiku 4.5 ranks higher in 12 and Grok 4.20 in 10.
Which is cheaper, Claude Haiku 4.5 or Grok 4.20?
Grok 4.20 costs 1.6× less per token ($3.75 vs $6 per 1M).
What is Claude Haiku 4.5 better at?
Claude Haiku 4.5 out-ranks Grok 4.20 at Translation & Localization, Summarization & Meeting Notes, Training & Education.
What is Grok 4.20 better at?
Grok 4.20 out-ranks Claude Haiku 4.5 at Structured Output, Presentations & Decks, AI Strategy.
More comparisons
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Prompt × model results
12 test cases · 3 evals