[::] Agentic Stacks

Claude Haiku 4.5 vs Claude Opus 4.7

Pick two tools from the same category to compare side-by-side.

Claude Haiku 4.5
Fast, cheap small model for classification, routing, high-volume work.
Claude Opus 4.7
Anthropic's deepest-reasoning model; planning, complex synthesis.
Category modelmodel
Vendor type commercialcommercial
Pricing usageusage
Strengths
  • + Lowest cost in Claude family
  • + Low latency suitable for real-time interactions
  • + Strong instruction-following for its size
  • + Deepest reasoning of the Claude family
  • + Best for ambiguous, planning-heavy tasks
Tradeoffs
  • − Weaker on complex reasoning vs Sonnet/Opus
  • − Lower context window than Sonnet
  • − Highest cost tier — not viable as default model
  • − Higher latency than Sonnet / Haiku
Used in stacks 4 6

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