Claude Haiku 4.5 vs GPT-4

Compare Claude Haiku 4.5 by Anthropic against GPT-4 by OpenAI, context windows of 200K vs 8K, tested across 21 shared challenges. Updated April 2026.

Which is better, Claude Haiku 4.5 or GPT-4?

Claude Haiku 4.5 and GPT-4 are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $30/M for GPT-4. Context windows: 200K vs 8K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Haiku 4.5 and GPT-4

Claude Haiku 4.5 is made by anthropic while GPT-4 is from openai. Claude Haiku 4.5 has a 200K token context window compared to GPT-4's 8K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $30/M for GPT-4.

Our Verdict
Claude Haiku 4.5
Claude Haiku 4.5
GPT-4
GPT-4

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Claude Haiku 4.5 is 12x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
85%

Claude Haiku 4.5 uses 20.4x more emoji

Claude Haiku 4.5
GPT-4
61%Vocabulary59%
47wSentence Length18w
0.64Hedging1.10
5.1Bold0.8
6.3Lists2.5
0.20Emoji0.00
2.46Headings0.00
0.17Transitions0.45
Based on 24 + 15 text responses
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Claude Haiku 4.5GPT-4

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