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Claude Opus 5 vs Gemini 3.5 Flash

List rates and scores as of . Cheaper is lower $/MTok. Higher scores win. Input edge: Gemini 3.5 Flash Output edge: Gemini 3.5 Flash

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

Gemini 3.5 Flash

google/gemini-3.5-flash
reasoningtools
  • List input$1.50
  • List output$9
  • Context1.0M
  • Offers11
  • Arena agent
  • AA intelligence50.2
  • AA coding70.1
  • AA agentic37.4

On plans: Cursor Business, Cursor Pro, Cursor Ultra, Gemini Code Assist Enterprise

Score sources on /benchmarks.