Claude 3 HaikuvsGrok 3
Claude 3 Haiku has a larger context window than Grok 3 (200K tokens vs 128K tokens).
| Spec | Claude 3 Haiku | Grok 3 |
|---|---|---|
| Input price | $0.25/M tokens | — |
| Output price | $1.25/M tokens | — |
| Context window | 200K tokens | 128K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Feb 2025 |
| HumanEval | 88.1% | 94.5% |
Our Verdict
Grok 3
Claude 3 HaikuRunner-up
Not enough votes to call it. On the specs, Grok 3 has the edge: bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Haiku
Input
$0.25
Output
$1.25
Grok 3
Input
—
Output
—
Where to run it
1 host
Claude 3 Haiku1 host
Grok 3
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
69%
Grok 3 uses 2.5x more emoji
Claude 3 Haiku
Grok 3
53%Vocabulary54%
31wSentence Length17w
0.68Hedging0.65
0.2Bold2.6
3.7Lists2.3
0.00Emoji0.02
0.00Headings0.48
0.11Transitions0.20
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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