Which is cheaper, Claude Opus 4.8 or GPT-6 Sol?

Claude Opus 4.8 lists at $5 input / $25 output per 1M tokens; GPT-6 Sol lists at $2 input / $10 output per 1M tokens. GPT-6 Sol has the lower list price.

Updated Sep 26, 2026

Claude Opus 4.8 vs GPT-6 Sol

GPT-6 Sol does not have enough reviewed code to rank yet.

Claude Opus 4.8 and GPT-6 Sol compared on relative bug rate, by coding agent, bug type, and language, and on price and usage.
Bug rate
	Claude Opus 4.8	GPT-6 Sol
Relative bug rate	0.88	Launch week
Details
Provider	Anthropic	OpenAI
Released	May 28, 2026	Sep 22, 2026
List price	$5 input / $25 output per 1M tokens	$2 input / $10 output per 1M tokens

1.00 = average · lower is better

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GPT-6 Sol vs GPT-5.6 Sol

Questions and answers

Which has fewer bugs, Claude Opus 4.8 or GPT-6 Sol?: GPT-6 Sol does not have enough reviewed code to rank yet.
Which is cheaper, Claude Opus 4.8 or GPT-6 Sol?: Claude Opus 4.8 lists at $5 input / $25 output per 1M tokens; GPT-6 Sol lists at $2 input / $10 output per 1M tokens. GPT-6 Sol has the lower list price.