Which is cheaper, Claude Haiku 5.5 or Claude Opus 4.8?

Claude Haiku 5.5 lists at $0.10 input / $0.50 output per 1M tokens; Claude Opus 4.8 lists at $5 input / $25 output per 1M tokens. Claude Haiku 5.5 has the lower list price.

Updated Oct 10, 2026

Claude Haiku 5.5 vs Claude Opus 4.8

Claude Haiku 5.5 does not have enough reviewed code to rank yet, and Claude Opus 4.8 is no longer ranked because it now writes under 0.5% of AI-attributed lines.

Claude Haiku 5.5 and Claude Opus 4.8 compared on relative bug rate and on price.
Bug rate
	Claude Haiku 5.5	Claude Opus 4.8
Relative bug rate	Launch week	No longer ranked
Details
Provider	Anthropic	Anthropic
Released	Oct 7, 2026	May 28, 2026
List price	$0.10 input / $0.50 output per 1M tokens	$5 input / $25 output per 1M tokens

1.00 = average · lower is better

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Questions and answers

Which has fewer bugs, Claude Haiku 5.5 or Claude Opus 4.8?: Claude Haiku 5.5 does not have enough reviewed code to rank yet, and Claude Opus 4.8 is no longer ranked because it now writes under 0.5% of AI-attributed lines.
Which is cheaper, Claude Haiku 5.5 or Claude Opus 4.8?: Claude Haiku 5.5 lists at $0.10 input / $0.50 output per 1M tokens; Claude Opus 4.8 lists at $5 input / $25 output per 1M tokens. Claude Haiku 5.5 has the lower list price.