Claude 3 Haiku vs GPT-5
Compare Claude 3 Haiku by Anthropic against GPT-5 by OpenAI, context windows of 200K vs 400K, tested across 51 shared challenges. Updated May 2026.
Which is better, Claude 3 Haiku or GPT-5?
Claude 3 Haiku and GPT-5 are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $1.25/M for GPT-5. Context windows: 200K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3 Haiku and GPT-5
Claude 3 Haiku is made by anthropic while GPT-5 is from openai. Claude 3 Haiku has a 200K token context window compared to GPT-5's 400K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $1.25/M for GPT-5.
Per 1M tokens
Claude 3 Haiku is cheaper on both — 5.0× input, 8.0× output
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer, bigger context window.
Claude 3 Haiku is 8.0x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-5 uses 16.2x more headings
