Claude Haiku 4.5

Ingredient list

1. #1Constitutional AI

   Invented by Anthropic · 2022-12 · Velocity 3y

   “Anthropic's core alignment technique is Constitutional AI, used to train Claude models.”

   alignmenthigh
2. #2Zero-Shot Chain-of-Thought

   Invented by University of Tokyo · 2022-05 · Velocity 4y

   “Claude models can perform zero-shot chain-of-thought reasoning when prompted appropriately.”

   reasoninghigh
3. #3Chain-of-Thought Prompting

   Invented by Google · 2022-01 · Velocity 4y

   “Claude models are trained to produce step-by-step reasoning when appropriate, including in Haiku.”

   reasoninghigh
4. #4Rotary Position Embedding (RoPE)

   Invented by Zhuiyi Technology · 2021-04 · Velocity 5y

   “Claude models use rotary position embeddings (RoPE) for positional encoding.”

   architecturehigh
5. #5Transformer Self-Attention

   Invented by Google · 2017-06 · Velocity 9y

   “Claude models are transformer-based language models.”

   architecturehigh