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Anthropic

Claude Sonnet 5

Comprehensive benchmark performance across 11 evaluation categories

Composite Score

0.0/100

Rank

#1

Token Benchmark

100.0

Lower burn, higher score

Total Tokens

267.2k

~8.9k/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

30 tests1.0x weight
3 tests1.0x weight
95.7
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

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

8.9k

Total Tokens

267.2k

Legal Reasoning Chain
5.8k tok2m 28s20.0
Multi-step Logic Puzzle
8.1k tok3m 53s57.2
Mathematical Proof
2.7k tok1m 48s77.5
REST API Design
1.2k tok1m 20s96.0
Graph Algorithm Implementation
7.8k tok1m 37s92.0
Concurrent Data Pipeline
2.1k tok1m 23s96.0
Off-by-One Boundary Fix
2.3k tok1m 28s95.2
Race Condition Detection
1.5k tok31.0s96.0
Memory Leak Fix
2.3k tok1m 26s96.0
OAuth2 Integration
2.3k tok1m 7s95.0
Search Autocomplete
3.0k tok1m 59s98.0
Webhook System
1.7k tok1m 58s97.0
Error Path Completeness
14.2k tok3m 33s94.6
Edge Case Coverage
51.6k tok19m 4s82.0
Test Suite Completeness
8.0k tok1m 21s82.0
Refactor Without Regression
2.3k tok1m 33s96.0
Merge Conflict Resolution
4.4k tok2m 4s96.0
Dependency Upgrade Safety
8.3k tok1m 35s80.0
SQL Injection Prevention
2.6k tok2m 7s82.6
XSS Mitigation
7.5k tok1m 56s97.0
Secret Management
8.9k tok4m 39s88.4
Structured Output Compliance
285 tok23.6s100.0
Constraint Adherence
382 tok16.4s73.0
Multi-step Instruction Chain
353 tok4m 20s75.0
Idiomatic Python
9.5k tok2m 12s96.0
TypeScript Best Practices
52.2k tok10m 51s91.0
Clean Architecture Patterns
27.2k tok6m 4s82.0
Algorithm Complexity
3.7k tok51.7s98.0
Memory-efficient Processing
12.9k tok2m 29s88.0
Query Optimization
11.7k tok2m 9s91.0

Regression History

18
Instruction Followingmoderate

Score dropped -13.2% from 95.3 to 82.7

Detected Aug 12, 2026
Overall Compositeminorresolved

Score dropped -3.9% from 87.9 to 84.5

Detected Aug 8, 2026·Resolved Aug 8, 2026
Code Qualitymoderate

Score dropped -7.9% from 89.8 to 82.7

Detected Aug 8, 2026
Bug Introduction Ratemajor

Score dropped -27.9% from 93.3 to 67.3

Detected Aug 8, 2026
Code Qualityminorresolved

Score dropped -4.5% from 90.4 to 86.3

Detected Aug 7, 2026·Resolved Aug 7, 2026
Bug Introduction Rateminorresolved

Score dropped -4.3% from 94.0 to 90.0

Detected Aug 7, 2026·Resolved Aug 7, 2026
Feature Implementationminorresolved

Score dropped -3.9% from 90.8 to 87.3

Detected Aug 6, 2026·Resolved Aug 6, 2026
Bug Fixesmoderate

Score dropped -5.5% from 92.8 to 87.7

Detected Aug 5, 2026
Instruction Followingmoderateresolved

Score dropped -6.3% from 96.1 to 90.1

Detected Aug 2, 2026·Resolved Aug 9, 2026
Code Thoroughnessmoderateresolved

Score dropped -6.6% from 86.9 to 81.2

Detected Aug 1, 2026·Resolved Aug 1, 2026
Performance Efficiencymajor

Score dropped -28.7% from 91.2 to 65.0

Detected Jul 31, 2026
Feature Implementationminorresolved

Score dropped -3.2% from 91.7 to 88.7

Detected Jul 31, 2026·Resolved Aug 4, 2026
Security Awarenessminorresolved

Score dropped -4.1% from 84.0 to 80.6

Detected Jul 30, 2026·Resolved Aug 11, 2026
Code Qualityminorresolved

Score dropped -3.2% from 91.2 to 88.3

Detected Jul 30, 2026·Resolved Aug 3, 2026
Coding Tasksminor

Score dropped -3.5% from 90.5 to 87.3

Detected Jul 29, 2026
Bug Fixesmoderateresolved

Score dropped -6.1% from 94.5 to 88.7

Detected Jul 29, 2026·Resolved Aug 3, 2026
Performance Efficiencyminorresolved

Score dropped -3.4% from 91.4 to 88.3

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

Score dropped -28.8% from 64.3 to 45.8

Detected Jul 28, 2026

Outage History

2
timeout

Started Jul 29, 8:01 PM·Ended Jul 29, 8:31 PM· checks affected
error

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