readable AI benchmarks (simplified)

readable AI benchmarks

Anthropic

Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback)

reasoning · closed weights · Sep 17, 2026

Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has a Quality Score of 73.8, ranking 3rd among 282 scored models. Per 1M tokens, pricing is $4.00 input, $20.00 output, $0.200 cached input, and $5.00 cache write. It has a 1M token context window. Its Reliability Score is 71.3, ranking 6th among 282 scored models, above average (total average: 36.9). Its Value Score is 46.6, high compared with the total Value average of 30.3.

Quality Score73.8coverage 78.8%: missing Epoch General ECI, Coding, CursorBench 3.2, Agentic and DeepSWE v1.1
Value Score46.6
Reliability71.3
Cache Discount95%

Model specification

Reasoning
reasoning
Input modalities
none
Output modalities
none
Context window
1M tokens
Weights
closed weights

Token prices USD per 1M tokens

Input
$4.00
Output
$20.00
Cached Input
$0.200
Cache write
$5.00
Cost per task
$3.46

Capability

Intelligence
56.0
Coding
not available
Agentic
not available
Omniscience
42.6
Correct
65.4%
Blended price
$2.94

Answer outcomes

Attempt rate: 88.1%

Correct 65.4%Incorrect 22.7%Abstained 11.9%

Artificial Analysis benchmarks

GDPval-AA v2
66%
SciCode
65%
Humanity’s Last Exam
58%
CritPt
32%
AA-Omniscience
71%
AA-LCR
85%

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