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Anthropic

Claude Opus 5.5 (High)

Released 2026-09-22 · Context 1000K · Data snapshot 2026-10-22

Overall score

73.1

Ranked #3
Benchmark coverage
81.8%
18 third-party benchmarks
Context window
1000K
tokens
Input price
$4.00
Cache read $0.20
Output price
$20.00
per million tokens
OpenRouter usage
#6
7.1T tokens/day

Prices converted at snapshot-day rate (USD/CNY 6.6761)

Dimension performance

Reasoning78.7
Office75.6
Human preference71.4
Knowledge70.3
Coding70.2
Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation

Benchmark details

Coding3 items
LiveBench 2.0 · Coding96.3
LiveBench 2.0 · Long Agentic85
LiveBench 2.0 · Browser80
Reasoning3 items
LiveBench 2.0 · Reasoning92.2
FrontierMath (Tiers 1-3)max91.2
AA Intelligence Index57.6
Office9 items
LiveBench 2.0 · Design86.9
LiveBench 2.0 · Research85
LiveBench 2.0 · Data Analysis80.3
AA Economics65.6
AA Strategy & Ops63.7
AA Legal63.3
AA Finance & Accounting60.7
AA Engineering60.4
AA Healthcare & Medical54.7
Knowledge2 items
GPQA Diamondmax90.6
SimpleQA Verifiedmax72.2
Human preference1 items
LMArena Human Blind Vote1508.7517

Multiple reasoning tiers of the same benchmark take the best value; raw scores have different scales and are not comparable across benchmarks.

Score trend

2026-10-202026-10-22
View daily data
2026-10-2273.1
2026-10-2173.1
2026-10-2073.1
Scores and prices come from third-party public data (Artificial Analysis / LMArena / OpenRouter). 50 is the reference models’ average; every 15 points ≈ one standard deviation. Prices are converted at snapshot-day rates and provided for reference only. Return to LLM Leaderboard.