Claude Opus 5.5 High

Released2026-09-22
Price per 1M$4.00 in · $20.00 out
Overall score65.5 · rank 17
Context window1,000,000 tokens
ProviderAnthropic
WeightsProprietary
ConfigurationHigh

Scores

DimensionScoreRankBenchmarks
Overall: Balanced 65.5 17 14
Overall: Coding 65.2 19 8
Overall: Reasoning 66.4 23 6
Overall: Agentic work 65.7 12 8
Overall: Frontend 64.1 24 4
Coding 64.8 25 3
Agents 65.9 3 1
Reasoning 66.2 29 4
Math 66.8 11 2
General 66.1 13 3
Multimodal 61.9 12 1
Value vs price+9.454

Buzz

Posts on XAbout 3,523 a day
Mood50% positive, 10% negative
Hacker News518 mentions this week
Checked2026-11-11

Evidence

Coding 64.8 ±2.6

BenchmarkResultSourceDate
MirrorCode 78.9% Epoch AI 2026-09-22
CursorBench 56.0% Epoch AI 2026-11-11
SciCode 60.4% Epoch AI 2026-11-11

Agents 65.9 ±3.4

BenchmarkResultSourceDate
Terminal-Bench 2.1 (Vals run) 87.6% Vals AI 2026-10-01

Reasoning 66.2 ±2.4

BenchmarkResultSourceDate
Extended NYT Connections 88.5% Lech Mazur 2026-11-10
ARC-AGI-2 93.3% Epoch AI 2026-11-11
ARC-AGI-2 (ARC Prize verified) 93.3% ARC Prize 2026-11-11
CritPt 30.9% Epoch AI 2026-11-11
ARC-AGI-1 (ARC Prize verified) 98.5% ARC Prize 2026-11-11
ARC-AGI-1 98.5% Epoch AI 2026-11-11

Math 66.8 ±2.1

BenchmarkResultSourceDate
MathArena ArXivMath (latest month) 79.8% MathArena 2026-11-11
MathArena BrokenArXiv (latest month) 77.8% MathArena 2026-11-11

General 66.1 ±3.0

BenchmarkResultSourceDate
LMArena Text 1,506 LMArena 2026-11-09
LLM Debate Benchmark 1,692 Lech Mazur 2026-10-26
Creative Story-Writing (Lech Mazur) 93.0% Lech Mazur 2026-10-23

Multimodal 61.9 ±4.1

BenchmarkResultSourceDate
LMArena Vision 1,295 LMArena 2026-11-09

Names matched to this model

claude-opus-5-5-high

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