Question 1

How much does Claude 4.5 Haiku Reasoning cost?

Accepted Answer

Claude 4.5 Haiku Reasoning costs $1 per 1 million input tokens and $5 per 1 million output tokens. This pricing is set by Anthropic.

Question 2

What tokenizer does Claude 4.5 Haiku Reasoning use?

Accepted Answer

Claude 4.5 Haiku Reasoning uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.

Question 3

What is Claude 4.5 Haiku Reasoning's context window?

Accepted Answer

Claude 4.5 Haiku Reasoning supports a context window of 200K tokens (200,000 tokens). The maximum output length is 8K tokens.

Question 4

How does Claude 4.5 Haiku Reasoning compare to other models?

Accepted Answer

You can compare Claude 4.5 Haiku Reasoning's pricing and capabilities against other LLMs in the comparison table above, or visit the full pricing page for a side-by-side view of all models.

Question 5

How do I count tokens for Claude 4.5 Haiku Reasoning?

Accepted Answer

Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for Claude 4.5 Haiku Reasoning using the cl100k_base tokenizer.

Model	Input / 1M	Output / 1M	Context	Max Output
Claude 4.5 Haiku Reasoning	$1	$5	200K	8K
Claude Haiku 4.5	$1	$5	200K	8K
o4 Mini	$1.1	$4.4	200K	100K
DeepSeek R1	$1.35	$5.4	128K	33K

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