Expired50% confidenceBenchmarkExact time
Claude Opus 5.5 topped the Web Dev leaderboard on Code Arena with a score of 1818, an improvement of 126 points over Opus 5, and is approximately 60% cheaper than the second-place GPT-6.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
9/30/2026
First Seen
Valid until: 10/14/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedAnthropic has released Claude Opus 5, with API pricing approximately half that of competitors' strongest flagship models.73% similarUnverifiedThe cost of Claude Opus 5.5 is less than one-tenth that of Fable 5.68% similarUnverifiedThe output price of Kimi K2.7 Code is approximately one-sixth that of Claude Opus 4.8 ($25/million tokens) and one-seventh-point-five that of GPT 5.5 ($30/million tokens).66% similarUnverifiedIn the e-commerce website test, Opus 4.8's estimated cost was $21.41 while Fable 5's was $36.8466% similarUnverifiedClaude Fable 5 costs twice as much as Opus 4.8 in API pricing.66% similar
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