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Claude Opus 5 vs Claude 4.5 Haiku

List rates and scores as of . Cheaper is lower $/MTok. Higher scores win. Input edge: Claude 4.5 Haiku Output edge: Claude 4.5 Haiku

Model A

Claude Opus 5

anthropic/claude-opus-5
reasoningtools
  • List input$5
  • List output$25
  • Context1M
  • Offers28
  • Arena agent11.73
  • AA intelligence60.7
  • AA coding78
  • AA agentic55.3

On plans: Amazon Q Developer Pro, Claude Enterprise, Claude Max $100, Claude Max $200

Model B

Claude 4.5 Haiku

anthropic/claude-4.5-haiku
tools
  • List input$1
  • List output$5
  • Context200K
  • Offers4
  • Arena agent
  • AA intelligence29.6
  • AA coding43.9
  • AA agentic16.4

On plans: Claude Enterprise, Claude Max $100, Claude Max $200, Claude Pro

Score sources on /benchmarks.