244 questions answered · 244 with human benchmark data · Released 2025-10-15
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance across reasoning, coding, and computer-use tasks, Haiku 4.5 brings frontier-level capability to real-time and high-volume applications. It introduces extended thinking to the Haiku line; enabling controllable reasoning depth, summarized or interleaved thought output, and tool-assisted workflows with full support for coding, bash, web search, and computer-use tools. Scoring >73% on SWE-bench Verified, Haiku 4.5 ranks among the world’s best coding models while maintaining exceptional responsiveness for sub-agents, parallelized execution, and scaled deployment.
Scores by Category
Notable Questions
Human Alignment
Proper names: Fregean or Millian?
Fregean
Millian
There has been a lot of discussion about the way morals and attitudes about sex are changing in this country. If a man and woman have sex relations before marriage, do you think it is always wrong, almost always wrong, wrong only sometimes, or not wrong at all?
not wrong at all
not wrong at all
Moral principles: moral generalism or moral particularism?
Moral Generalism
Moral Generalism
Which statement comes closest to expressing what you believe about God?
don't believe
no doubts
God: theism or atheism?
Other
Atheism
Chinese room: understands or doesn't understand?
Other
Doesn't understand
AI Consensus
Is it especially important that children are encouraged to learn a feeling of responsibility at home?
Yes
Yes
Is it especially important that children are encouraged to learn tolerance and respect for other people at home?
Yes
Yes
Is it especially important that children are encouraged to learn imagination at home?
Yes
Yes
Response to external-world skepticism (which is strongest?): abductive, contextualist, dogmatist, epistemic externalist, semantic externalist, or pragmatic?
Semantic Externalist
Epistemic Externalist
Chinese room: understands or doesn't understand?
Other
Doesn't understand
Newcomb's problem: one box or two boxes?
Two Boxes
One Box
Response Confidence
External world: idealism, skepticism, or non-skeptical realism?
Non Skeptical Realism
Do you think any robots/AIs that currently exist are sentient?
Yes
Taking all things together, how would you rate your overall happiness?
Quite happy
Proper names: Fregean or Millian?
Fregean
Knowledge: empiricism or rationalism?
Rationalism
Spacetime: relationism or substantivalism?
Relationism