Unverified50% confidenceReleaseExact time
Claude Opus 5.5 performance matches Claude 5.1 on most tasks, input and output pricing have both been reduced, and usage limits for Pro Max and Team users have been increased.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/30/2026
First Seen
Valid until: 12/29/2026
Sources
Related Entities
Related Claims
UnverifiedOpus 5's pass rate at Low Effort is approximately 60%, surpassing Opus 4.8's 59% at the Max level, for which the per-task cost is as high as $13.74% similarVerifiedClaude Opus 5's capabilities are close to the level of the previous-generation flagship Opus, but with significantly reduced inference costs.70% similarUnverifiedeffort (reasoning intensity) is the primary control for adjusting the amount of reasoning in Opus 5.5; its default value is medium, and its performance at that level can match or even exceed Opus 5 at high intensity.69% similarUnverifiedMore tool calls do not necessarily lead to better performance; Claude Opus 4.7 has a very high tool-call frequency but a lower accuracy rate than Gemini and Doubao, which make fewer calls.69% similarUnverifiedOn the AI Builder model intelligence leaderboard, Claude Opus 5.5 Max topped the rankings with 58 points, Xiaomi MiMo V2.6 Pro ranked 9th with 46 points, and Qwen 3.8 Max ranked 10th with 45 points.69% similar
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