OpenRouter breaks down Claude Code costs using real session data: median cost for short sessions is $0.31 for Opus 5.5.
Based on real Claude Code session data from the past 30 days ending October 18, 2026, OpenRouter reports median costs per session: $0.31 for Opus 5.5 and $0.16 for Sonnet 5.5 in 2–9 turn conversations; Haiku 5.5 costs less than one cent. For 10–49 turns, costs rise to $1.39 for Opus 5.5 and $0.60 for Sonnet 5.5.
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