Claude Sonnet 5.5 Medium

Released2026-09-28
Price per 1M$2.00 in · $10.00 out
Overall score58.4 · rank 145
Context window1,000,000 tokens
ProviderAnthropic
WeightsProprietary
ConfigurationMedium

Scores

DimensionScoreRankBenchmarks
Overall: Balanced 58.4 145 7
Overall: Coding 58.8 124 7
Overall: Reasoning 57.5 162 4
Overall: Agentic work 58.0 157 7
Overall: Frontend 59.5 82 2
Coding 59.5 99 2
Agents 57.6 121 1
Reasoning 57.5 166 4
Value vs price+4.2143

Buzz

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

Evidence

Coding 59.5 ±1.5

BenchmarkResultSourceDate
CursorBench 39.2% Epoch AI 2026-11-11
SciCode 52.9% Epoch AI 2026-11-11

Agents 57.6 ±2.2

BenchmarkResultSourceDate
APEX-Agents 44.6% Epoch AI 2026-11-11

Reasoning 57.5 ±2.4

BenchmarkResultSourceDate
CritPt 16.9% Epoch AI 2026-11-11
ARC-AGI-2 32.8% Epoch AI 2026-11-11
ARC-AGI-1 (ARC Prize verified) 70.0% ARC Prize 2026-11-11
ARC-AGI-1 70.0% Epoch AI 2026-11-11
ARC-AGI-2 (ARC Prize verified) 32.8% ARC Prize 2026-11-11
ARC-AGI-3 4.9% ARC Prize 2026-11-11

Results not used in the score

BenchmarkResultSourceWhy not used
ARC-AGI-3 0.4% ARC Prize Lower duplicate run on the same benchmark

Names matched to this model

claude-sonnet-5-5-medium

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