Anthropic
Claude Sonnet 5.5 (xHigh)
Released 2026-09-28 · Context 1000K · Data snapshot 2026-10-22
Overall score
67.5
Ranked #6Benchmark coverage
81.8%
18 third-party benchmarks
Context window
1000K
tokens
Input price
$2.00
Cache read $0.10
Output price
$10.00
per million tokens
OpenRouter usage
#14
2.5T tokens/day
Prices converted at snapshot-day rate (USD/CNY 6.6761)
Dimension performance
Reasoning
73.6
Coding
68.8
Human preference
67.6
Office
63.3
Knowledge
61.5
Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation
Benchmark details
Coding3 items
LiveBench 2.0 · Coding94.7
LiveBench 2.0 · Browser84
LiveBench 2.0 · Long Agentic78.8
Reasoning3 items
LiveBench 2.0 · Reasoning91.6
FrontierMath (Tiers 1-3)max88.8
AA Intelligence Indexhigh46.8
Office9 items
LiveBench 2.0 · Design85
LiveBench 2.0 · Research83.6
LiveBench 2.0 · Data Analysis59.5
AA Economicshigh51.8
AA Strategy & Opshigh51.6
AA Legalhigh48.7
AA Engineeringhigh48.3
AA Finance & Accountinghigh47.1
AA Healthcare & Medicalhigh43.6
Knowledge2 items
GPQA Diamondmax95.6
SimpleQA Verifiedmax46.5
Human preference1 items
LMArena Human Blind Vote1477.0993
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
| 2026-10-22 | 67.5 |
| 2026-10-21 | 67.5 |
| 2026-10-20 | 67.5 |