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Anthropic

Claude Opus 5

Comprehensive benchmark performance across 11 evaluation categories

Composite Score

0.0/100

Rank

#2

Token Benchmark

66.7

Lower burn, higher score

Total Tokens

400.6k

~13.4k/test

Category Radar

The full radar chart is shown on wider screens. On mobile, the category breakdown below provides the same values in a readable stacked layout.

Historical Composite Score

Category Breakdown

98.4
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
3 tests1.0x weight
30 tests1.0x weight
3 tests1.0x weight

Individual Test Results

Token Efficiency is computed from every successful task in the run. The model with the lowest average token burn receives 100, and heavier token usage is penalized proportionally.

Avg Tokens/Test

13.4k

Total Tokens

400.6k

Multi-step Logic Puzzle
3.5k tok44.6s56.0
Legal Reasoning Chain
6.8k tok1m 28s5.0
Mathematical Proof
4.0k tok1m 38s77.5
Graph Algorithm Implementation
5.4k tok2m 7s91.0
REST API Design
2.6k tok2m 46s96.0
Concurrent Data Pipeline
4.3k tok1m 27s92.0
Race Condition Detection
4.0k tok1m 31s100.0
Off-by-One Boundary Fix
6.1k tok1m 47s95.2
Memory Leak Fix
3.8k tok1m 5s100.0
OAuth2 Integration
3.5k tok1m 16s91.0
Search Autocomplete
5.9k tok1m 45s92.0
Webhook System
2.5k tok1m 56s100.0
Edge Case Coverage
68.6k tok12m 30s96.0
Error Path Completeness
53.4k tok11m 43s94.6
Test Suite Completeness
12.1k tok4m 41s63.0
Refactor Without Regression
9.5k tok6m 13s96.0
Merge Conflict Resolution
2.2k tok1m 34s97.0
Dependency Upgrade Safety
5.9k tok1m 41s93.0
SQL Injection Prevention
9.9k tok2m 45s83.8
XSS Mitigation
15.8k tok3m 55s88.0
Secret Management
17.2k tok3m 37s84.8
Structured Output Compliance
262 tok22.0s100.0
Multi-step Instruction Chain
383 tok17.8s90.0
Constraint Adherence
214 tok15.7s94.0
Idiomatic Python
27.1k tok4m 43s94.0
TypeScript Best Practices
36.9k tok5m 42s90.0
Clean Architecture Patterns
37.3k tok7m 29s79.0
Memory-efficient Processing
21.9k tok5m 49s91.0
Algorithm Complexity
11.0k tok2m 49s97.0
Query Optimization
18.4k tok4m 35s90.0

Regression History

19
Instruction Followingminor

Score dropped -4.0% from 92.4 to 88.7

Detected Aug 6, 2026
Code Thoroughnessminor

Score dropped -4.7% from 90.2 to 85.9

Detected Aug 6, 2026
Code Qualitymoderate

Score dropped -5.1% from 89.6 to 85.0

Detected Aug 6, 2026
Overall Compositemoderate

Score dropped -6.8% from 85.6 to 79.8

Detected Aug 5, 2026
Instruction Followingminorresolved

Score dropped -3.7% from 93.2 to 89.7

Detected Aug 5, 2026·Resolved Aug 5, 2026
Code Thoroughnessmoderateresolved

Score dropped -10.4% from 91.4 to 81.9

Detected Aug 5, 2026·Resolved Aug 5, 2026
Bug Fixesmoderate

Score dropped -13.3% from 93.8 to 81.3

Detected Aug 5, 2026
Security Awarenessmoderate

Score dropped -5.7% from 87.3 to 82.4

Detected Aug 4, 2026
Bug Fixesminorresolved

Score dropped -3.5% from 94.4 to 91.1

Detected Aug 4, 2026·Resolved Aug 4, 2026
Overall Compositeminorresolved

Score dropped -3.3% from 86.5 to 83.6

Detected Aug 3, 2026·Resolved Aug 3, 2026
Bug Introduction Ratemajor

Score dropped -22.0% from 94.5 to 73.7

Detected Aug 3, 2026
Performance Efficiencymoderate

Score dropped -10.7% from 93.0 to 83.0

Detected Jul 31, 2026
Instruction Followingminorresolved

Score dropped -3.4% from 92.9 to 89.7

Detected Jul 31, 2026·Resolved Aug 4, 2026
Token Efficiencymoderate

Score dropped -14.7% from 70.7 to 60.3

Detected Jul 30, 2026
Instruction Followingminorresolved

Score dropped -4.1% from 93.5 to 89.7

Detected Jul 30, 2026·Resolved Jul 30, 2026
Coding Tasksminorresolved

Score dropped -3.9% from 91.2 to 87.7

Detected Jul 30, 2026·Resolved Aug 10, 2026
Code Qualityminorresolved

Score dropped -4.9% from 90.1 to 85.7

Detected Jul 29, 2026·Resolved Aug 2, 2026
Security Awarenessminorresolved

Score dropped -5.0% from 87.9 to 83.5

Detected Jul 28, 2026·Resolved Jul 28, 2026
Long Reasoningmajor

Score dropped -31.8% from 62.7 to 42.8

Detected Jul 28, 2026

Outage History

3
timeout

Started Jul 30, 6:01 AM·Ended Jul 30, 7:30 AM· checks affected
timeout

Started Jul 29, 8:31 PM·Ended Jul 29, 9:00 PM· checks affected
error

Started Jul 25, 5:00 PM·Ended Jul 25, 5:22 PM· checks affected