Claude Haiku 4.5 vs GPT-5.4 mini

Anthropic vs OpenAI — compared on intelligence, speed, and capabilities.

AnthropicClaude Haiku 4.5OpenAIGPT-5.4 mini
Intelligence8082
Speed9293
AnthropicClaude Haiku 4.5

Anthropic's smallest and fastest model in the Claude 4.5 lineup, optimized for low cost, low latency, and real-time responsiveness, while delivering near-frontier performance on coding, agentic workflows, and extended reasoning tasks.

  • ✓ reasoning
  • ✓ temperature
  • ✓ web search
  • ✓ reasoning effort
  • ✓ vision
  • ✓ documents
OpenAIGPT-5.4 mini

OpenAI's strongest mini model for coding, computer use, and subagents. Brings the strengths of GPT-5.4 to a faster, more efficient model designed for high-volume workloads.

  • ✓ reasoning
  • ✓ web search
  • ✓ reasoning effort
  • ✓ vision
  • ✓ documents
  • ✓ image generation

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