Claude Sonnet 5.5 High

Released2026-09-28
Price per 1M$2.00 in · $10.00 out
Overall score62.7 · rank 55
Context window1,000,000 tokens
ProviderAnthropic
WeightsProprietary
ConfigurationHigh

Scores

DimensionScoreRankBenchmarks
Overall: Balanced 62.7 55 9
Overall: Coding 62.9 43 9
Overall: Reasoning 61.4 86 5
Overall: Agentic work 63.0 42 8
Overall: Frontend 63.8 29 3
Coding 62.5 49 2
Agents 63.5 17 1
Reasoning 61.4 99 5
Frontend 64.5 8 1
Value vs price+8.566

Buzz

Posts on XAbout 176 a day
Mood44% positive, 0% negative
Hacker News31 mentions this week
Checked2026-11-11

Evidence

Coding 62.5 ±1.5

BenchmarkResultSourceDate
CursorBench 47.8% Epoch AI 2026-11-11
SciCode 53.7% Epoch AI 2026-11-11

Agents 63.5 ±3.4

BenchmarkResultSourceDate
Terminal-Bench 2.1 (Vals run) 83.1% Vals AI 2026-10-01

Reasoning 61.4 ±1.8

BenchmarkResultSourceDate
Extended NYT Connections 80.5% Lech Mazur 2026-11-10
ARC-AGI-2 67.4% Epoch AI 2026-11-11
ARC-AGI-2 (ARC Prize verified) 67.4% ARC Prize 2026-11-11
CritPt 24.6% Epoch AI 2026-11-11
ARC-AGI-1 (ARC Prize verified) 92.0% ARC Prize 2026-11-11
ARC-AGI-1 92.0% Epoch AI 2026-11-11
ARC-AGI-3 35.5% ARC Prize 2026-11-11

Frontend 64.5 ±3.0

BenchmarkResultSourceDate
LMArena WebDev 1,715 LMArena 2026-11-10

Results not used in the score

BenchmarkResultSourceWhy not used
ARC-AGI-3 1.2% ARC Prize Lower duplicate run on the same benchmark

Names matched to this model

claude-sonnet-5-5-high

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