Updated

Claude Opus 5.5 vs GPT-5.6 Sol

Claude Opus 5.5 does not have enough reviewed code to rank yet.

Claude Opus 5.5 and GPT-5.6 Sol compared on relative bug rate, by coding agent, bug type, and language, and on price and usage.
Claude Opus 5.5GPT-5.6 Sol
Bug rate
Relative bug rateLaunch week0.73
Details
ProviderAnthropicOpenAI
ReleasedSep 22, 2026Jul 9, 2026
List price$4 input / $20 output per 1M tokens$4 input / $20 output per 1M tokens

1.00 = average · lower is better

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Questions and answers

Which has fewer bugs, Claude Opus 5.5 or GPT-5.6 Sol?
Claude Opus 5.5 does not have enough reviewed code to rank yet.
Which is cheaper, Claude Opus 5.5 or GPT-5.6 Sol?
Both list at $4 input / $20 output per 1M tokens.